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ARJ_BBS.DOC
ARJ SUPPORT BBSes: May 1991
The latest version of ARJ can be obtained from the following
ARJ SUPPORT BBSes:
Fidonet users can file request (FREQ) the latest released version
of ARJ from Fidonet node 1:16/390 under the magic file name of ARJ.
Zorro the Malamute BBS, MA, (508) 653-9628, 1:16/390 Fidonet
Wonderland BBS, MA, (617) 965-3036 (New phone number)
Bay State BBS, MA, (617) 598-6646, 1:101/370 Fidonet
Dimensional Crossroads BBS, MA, (508) 427-5379
BigTime BBS AZ, (602) 983-0480, 300-38400 baud
The Cutting Edge BBS, CT, (203) 233-8993
Tunnels of Vesarius BBS (San Diego, California)
Node I (619) 587-9825, USRobotics HST/V32, 1:202/202 Fidonet
Node II (619) 453-1781, Compucom 9600, 1:202/208 Fidonet
The Data Express BBS (AUSTRALIA)
61 2 564 2172 (V.32), 3:712/607 Fidonet
Crystal Circuitry BBS (AUSTRALIA)
61 2 868 4490 (300-9600)
CBBS CANAL VIP BBS (BRAZIL)
(011) 853-5333
Paulo Cesar Breim
Rua Fradique Coutinho 266
Sao Paulo SP
CEP: 05416
Fone: (011) 64-7199
C.A.T. Kommunikations-System (GERMANY)
49-6192-42054 (1200-2400)
49-6192-42057 (19200 PEP)
Packet switching networks: 45619270055
B-Catel BBS (THE NETHERLANDS)
+31,33,612819
Ensing-BBS (THE NETHERLANDS)
+31 5904-1913
end of document
ARJ.DOC
User's Manual for the ARJ archiver program, May 1991
ARJ software and manual copyright (c) 1990,91 by Robert K Jung.
All rights reserved.
ARJ version 2.10 release
** IMPORTANT NEWS ****************************************************
Users of ARJ should read the WHATSNEW.DOC and UPDATE.DOC which
contain information about the latest improvements to ARJ.
**********************************************************************
INTRODUCTION:
ARJ is my first attempt to use my interest in compression
technology to produce an archiver for personal use on my PC and on
minicomputers. ARJ is written in ANSI C and only uses ANSI
standard libraries. All machine dependent functions (file
date-time modified, file attributes, etc.) are contained in a
single environment source file using ifdefs to enable one to
maintain a single version of the source code for multiple different
machines.
The DOS version has manually optimized compression, extraction,
CRC, and output routines (in assembler).
The current functionality of ARJ is patterned after that of AR and
LHARC with additional features derived from those of the
competition and from the many suggestions of ARJ users.
I have created a new archive format for ARJ to support cross
platform archives, multiple volume archives, and a new security
envelope feature. Trying to maintain compatibility with existing
formats is very difficult. Some users have wondered why I did not
choose to use the ZIP format. That might have been possible, but
ZIP utilities would still be unable to extract the compressed data,
because the compressed data is itself a new format.
In addition, there are plans to port versions of ARJ to the AMIGA
and ATARI ST platforms. I expect those versions to be available
late in 1991. There will be a simplified version of ARJ in source
code to be released for the UNIX platform late in 1991. There are
plans for an OS/2 version of ARJ, also. These plans all depend
upon user support. Already, there is a version of UNARJ developed
in Holland for the ATARI ST. And with this ARJ release comes a
version of UNARJ that has been built and tested on a SUN UNIX box.
TERMINOLOGY:
The following terms are used through this manual.
ARCHIVE - This is a file containing one or more files in a
compressed or non-compressed state and containing file related
information such as filename and date-time last modified, etc.
ARJ FILE - This is an archive created by ARJ.
COMPRESSION - The process of encoding redundant information into
data requiring less storage space.
COMPRESSION PERCENTAGE/RATIO - The percentage compression reported
by ARJ is a variation of one of the TWO standard methods of
expressing compression ratio in the technical literature. ARJ uses
the compressed size / original size ratio. The other method is the
inverse ratio. When ARJ reports 96% as the compression ratio, that
means that the compressed file is 96 percent of the original size
(very little compression). Other archivers use their own methods.
LHARC uses the same ratio as ARJ.
EXTRACTION or UNCOMPRESSION - The processing of recreating the
exact information that was previously compressed.
SELF-EXTRACTION MODULE (SFX) - This is an archive that is an
executable file that is capable of extracting self-contained files.
TEXT MODE - In text mode, ARJ inputs the file using the C library
text mode which translates the carriage return, linefeed control
characters of MS-DOS to a single linefeed character. This saves
space and provides the option for cross platform file extraction.
On another platform, the host C library would change the single
linefeed to the host text newline separator sequence. In addition,
for platforms such as PRIMOS which set bit 8 in ASCII text
characters, ARJ sets/resets bit 8 according to the platform
extracted to. All input is stripped to 7-bit ASCII.
VOLUMES - These are ARJ archives that are in sequence and have been
created by a single ARJ command. Files in the volumes may span
volumes in a split format. These volumes are usable archives.
MAJOR FEATURES OF ARJ:
Ranks with the best in compression in terms of size reduction of
the currently available archivers including PKZIP 1.10, PAK
2.51, LHARC 1.13c, and LHA 2.12. Users have reported that ARJ
also compresses slightly better than ARC 7.00. ARJ is
particularly effective with database files, graphics files, and
large documents. With the "-jm" option, ARJ usually compresses
even smaller at a cost of time.
Archive and individual file comments with option of inputting
comments from a file.
32 bit CRC file integrity check.
DOS volume label support.
Empty directory support.
Test new archive before overwriting the original archive option.
Multiple volume archives with one ARJ command. This allows the
user to backup a full hard disk drive to multiple floppies.
Recovery of individual files is convenient because each volume is
an individual archive. No need to use SLICE with ARJ.
File re-ordering facility with the option of sorting by file size,
file extension, CRC value, date-time modified, filename, pathname,
compression ratio, file attribute and more.
String searching with context display within archive files.
Built-in facility to recover files from broken archives.
Self-extraction feature that is internal to the ARJ runfile. The
SFX module is full-featured with a built-in help screen.
Internal string data integrity check in ARJ to resist hacking a la
LHARC to ICE.
Archive security envelope feature to resist tampering with secured
archives. This feature disallows ANY changes to a secured archive.
Not even comments can be changed.
Password option to encrypt archived files.
Text mode data compression option to enable movement of text files
from one host machine to another. Text mode also results in
slightly greater file size reduction on MS-DOS machines.
File extraction to screen in a paged mode to permit browsing
through an archive.
Specification of the files to be added to an archive via one or
more list files. In addition, ARJ can generate a list file.
Specification of files to be excluded from processing by ARJ.
Sub-directory recursion during compression and extraction.
ARCHIVER BENCHMARKS:
This is information for those who plan to publish benchmark test
results comparing ARJ with other file archivers.
The ARJ -m1 (default) compression is meant to compete with LHA
2.12. The ARJ -m2 compression is meant to compete with PKZIP 1.10.
The ARJ -m3 and -m4 are almost superfluous in that they only
provide slightly better speed than -m2.
The ARJ -e option is necessary during size benchmarks because ARJ
by default stores the entire specified pathname in the archive as
opposed to other archivers which strip path specs.
The very size of the ARJ runfile adds significantly to the
compression and extraction times when testing smaller archives. It
would be fairer to use larger archives or run the archivers from a
RAMDISK. Also, compressed executables affect the test times, so
that all archivers should be tested in uncompressed form.
The ARJ comment header adds bytes to the size of an ARJ archive.
The larger file headers also add bytes to the size of an ARJ
archive. So, in size benchmarks compressing a large number of
small files, the header size difference will be evident.
RELEASE NOTES:
This version does NOT include any expiration feature. ARJ 2.10 is
fully functional. No function has been crippled. The only
difference between the registered version and the shareware version
is the version/copyright message.
This release states that it is NOT for commercial use. Commercial,
institutional and government users must purchase a site license to
obtain a registered version of ARJ for their use. However,
commercial, institutional and government users may use ARJ for
evaluation purposes for a period of 30 days. See the LICENSE.DOC
for details.
While evaluating ARJ, you should use the "-jt" (test archive)
option to verify new ARJ archives.
This version has been tested under DOS 2.11, 3.3, and 4.01. It has
been lightly tested under DOS 5.0.
The executables ARJ.EXE and REARJ.EXE can be compressed by DIET,
LZEXE, and PKLITE.
Here is a suggested command that will test ARJ on all of your files:
ARJ a -r -jt -y "-vasdel a:\vol.*" a:\vol c:\*.*
ARJR AND DEARJ PROGRAMS:
The new programs ARJR and DEARJ are available only to registered
users of ARJ. ARJR is the ARJ program minus the help screen and
SFX modules. DEARJ is the ARJR program minus the archive
creation/modification functions. See the LICENSE.DOC and
ORDERFRM.DOC for more information.
GETTING STARTED:
I assume that you have a copy of the self-extracting ARJ module
named ARJ210.EXE. Typing ARJ210 [RETURN] at the DOS command prompt
will initiate the self-extraction feature. ARJ210 will by default
extract its files to the current directory. When ARJ210 starts,
you will see several lines of text describing ARJ and then a line
asking if you wish to continue extraction. Entering "yes" or "y"
will continue the extraction. If there are any duplicate filenames
in the current directory, the program will prompt you for
overwriting. You can say "yes", "no", or "quit".
Only the extracted ARJ.EXE file needs to be copied to a directory
named in your "PATH" command in your autoexec.bat file. On many
PCs, this directory may be C:\DOS or C:\BIN. With MS-DOS 3.0 and
above, you can use path notation "\BIN\ARJ e archive" to use ARJ.
You may, of course, prefer to use ARJ 0.15, 0.20, or higher to
extract the contents of ARJ210.EXE file manually.
Example: ARJ e ARJ210.EXE \temp\
QUICK START TO USING ARJ:
Please note that switch options may be placed anywhere in the
command line.
To create an ARJ archive containing all of the files in the
current directory:
ARJ a archive
To create an ARJ archive containing all files with the ".DOC"
extension in the current directory:
ARJ a archive *.DOC
To create an ARJ archive containing all of the files in the
named directory and all files in subdirectories of the named
directory:
ARJ a -r archive named_directory\*.*
To create an archive containing files without path specs:
ARJ a -e archive named_directory\*.*
For maximum compression, use the "-jm" or "-jm1" options.
For better speed, use the -m2 option.
ARJ a -r -jm archive named_directory\*.*
ARJ a -r -m2 archive named_directory\*.*
To create an ARJ archive containing the full specified pathnames
of the stored files including any drive and root specs.
ARJ a -r -jf archive C:\top_directory\*.*
To backup your hard disk to multiple volume archives on drive A
with archive testing and archive bit resetting:
ARJ a -r -jf -jt -a1 -b2 -vvas A:backup C:\*.*
To extract all of the files in an archive to the current
directory:
ARJ e archive
To extract all of the files in an archive to a named directory:
ARJ e archive named_directory\
To extract all files with the ".DOC" extension to the current
directory:
ARJ e archive *.DOC
To extract all of the files in an archive recreating the
original directory structure:
ARJ x archive original_directory_name\
The ending "\" character is optional.
To extract all of the files in an archive containing absolute
pathnames to the original paths:
ARJ x -jf archive
To list all of the files in an archive:
ARJ l archive
HOW TO CREATE AN EXECUTABLE SELF-EXTRACTING ARJ ARCHIVE
The command "ARJ f -je archive ..." will create a full featured
self-extracting archive from an already built archive. No error
message will be displayed concerning not finding "...".
The command "ARJ f -je1 archive ..." will create a smaller
self-extracting archive.
Syntax: ARJ f -je archive ... produces archive.exe
Under DOS systems other than 2.11, 3.2, 3.3, 4,0, you may have to
rename the self-extract module to ARJSFX.EXE to do the extraction.
See the "-je" option for more information.
CONVERTING OTHER ARCHIVE FILES TO ARJ FORMAT
Included with this software is the program REARJ. This program can
be used to individually or collectively convert archive files from
other formats to the ARJ format.
REARJ *.ZIP *.ARC *.LZH will convert all ZIP, ARC, and LZH
archives in the current directory to the ARJ format. See the
REARJ.DOC for more information about REARJ.
HOW TO USE ARJ:
If you type ARJ [return], you will see a simple help screen.
If you type ARJ -? [return], you will see more detailed help
information.
ARJ LIMITATIONS:
ARJ will accept up to: 64 filenames/wildnames on command line
16000 filenames resulting from wildnames
8000 filenames/wildnames to exclude
8000 ARJ filenames resulting from wildnames
2048 character comments
(up to 25 lines or 1 file)
ARJ requires approximately 282,000 bytes plus the memory necessary
to store all of the pathnames to be archived when using the default
compression method (-m1).
There is no limitation on the number of files that can be stored in
one archive. However, each add command can only add a maximum of
16000 files at a time depending upon memory availability. I expect
that a normal maximum of 5000 to 8000 filenames can be handled
without running out of memory during the compress phase.
If you do not have enough memory, you should use the "-l" switch to
dump the filenames to a list file. You can then break the list
file into smaller files and use multiple ARJ commands to archive
all of the files.
Example:
ARJ a -r -lname.lst archive \*.*
If the above command fails due to lack of memory, split the
name.lst file into smaller pieces named name1.lst, name2.lst,
etc. Then execute:
ARJ a archive !name1.lst
ARJ a archive !name2.lst
.
.
ARJ currently does NOT differentiate between wildnames like "C:*.*"
and "C:\*.*". ARJ would expand each of those two wildnames into a
list that could be up to twice as long as necessary.
When updating an archive, ARJ creates a temporary file named
ARJTEMP.$nn in the current directory or work directory.
While ARJ is scanning a wildcard filespec, ARJ will change the name
of the target archive to ARJTEMP.$nn while the scan is proceeding
to avoid including the archive itself in an add or move command.
Also, as a result, you cannot add a file named ARJTEMP.$nn to an
ARJ archive. Please note that the name of this temporary file may
change at a future revision of ARJ.
DIFFERENCES BETWEEN ARJ AND LHARC:
The archive formats are NOT compatible.
The compression and decompression algorithms are NOT compatible.
ARJ only supports its own archive format.
ARJ by default stores the full specified pathname of files
archived minus any drive letter and root symbol.
The "e" and "x" commands will by default extract all of the files
in the archive without using date time stamps to select files. You
should specify "-u -y" to duplicate LHARC functionality.
The "f" command in ARJ requires the -r switch to be identical to
the LHARC f command.
The ARJ archive suffix is ".ARJ".
ARJ does NOT sort filenames when archiving.
IMPORTANT NOTES:
When using the "-w" working directory switch, ARJ does not check on
space availability before overwriting the original archive if it
exists. Be sure that you have enough disk space for the new
archive before using the "-w" switch. If ARJ aborts in this
situation because of disk space, ARJ will keep the temporary
archive.
By default, ARJ does not see hidden or system files when using
wildnames. ARJ will process system and hidden files when you
either specify the exact filename or specify the "-a" switch.
Like LHARC and PKZIP, ARJ requires extra disk space to UPDATE an
archive file. ARJ will backup the original archive while it
creates the new archive, so enough room must be available for both
archives at the same time.
Currently, ARJ will not extract to a readonly file.
THE FILESPEC "..."
Several times in this document and the UPDATE.DOC file, there is
mention of the filespec "...". This filespec is chosen so as to
not match any existing filename. ARJ will NOT generate an error or
warning for not matching "..." specifically.
ARJ ERROR SITUATIONS:
ADD:
If a user specified file is not found during an add, ARJ will
continue processing, and will keep the archive and terminate with
an error condition.
In a disk full condition or any other file i/o error, ARJ will
promptly terminate with an error condition and delete the temporary
archive file unless the user has specified the "-jk" switch.
MOVE:
ARJ will only delete files that have been successfully added to the
archive. If you have specified the "-jt" (test) switch, ARJ will
abort on any error. If you specify the "-jk" switch, ARJ will not
delete the temporary archive upon an abort.
EXTRACT:
In a disk full condition or any other file i/o error, ARJ will
promptly terminate with an error condition and delete the current
output file.
ARJ DOS ERRORLEVELS:
0 -> success
1 -> warning (specified file to add to archive not found or
specified file to list, extract, etc., not found)
2 -> fatal error
3 -> CRC error (header or file CRC error)
4 -> ARJ-SECURITY error or attempt to update an ARJ-SECURED archive
5 -> disk full or write error
6 -> can't open archive or file
7 -> simple user error (bad parameters)
8 -> not enough memory
ARJ USER ACTION PROMPTS:
ARJ prompts the user for action at certain times. There are
several types of prompts. One is for yes/no permission, another is
for a new filename, another is for archive comments, and one other
is for search strings. The yes/no prompts will also accept "quit"
for program termination and "always" to bypass further user
prompts.
Since ARJ uses STDIN for user input, be careful about typing ahead
anticipating prompts. ARJ may prompt you for an unexpected action
and use your earlier input.
ARJ ENVIRONMENT VARIABLE:
ARJ will first look for an environment variable named ARJ_SW and
use its value as switch options for ARJ. If ARJ finds such an
environment variable, it will display a message to that effect.
SET ARJ_SW=<switches>
Example: SET ARJ_SW=-w\temp -k -e
Do NOT add any blanks after the variable name ARJ_SW. As in LHARC,
command line switches can be selected to override ARJ_SW settings.
A problem to watch out for is using a different switch character
for ARJ_SW and the command line. This usually happens when using
a program that calls ARJ.
ARJ COMMAND LINE SYNTAX:
ARJ <command> [-<switch>[-|+|<option>]...] <archive_name>[.ARJ]
[<base_directory_name>\] [<!list_name>|<path_name>|<wild_name>...]
Commands and switches can be entered in upper or lower case.
Switches can be placed anywhere after the command ARJ.
ARJ supports the use of either "-" or "/" as the switch option
character. The first occurrence of either "-" or "/" that ARJ
encounters will determine the switch symbol. You may NOT mix and
match switch symbols. This also includes the ARJ_SW environment
variable. ARJ_SW is checked first for switches. Throughout this
document, the symbol "/" may be substituted for "-" in switch
usage.
Examples: ARJ a A:archive *.* /va /r is correct
ARJ a A:archive *.* /va -r IS INCORRECT USAGE!
Switch options SHOULD NOT be combined. At this time combinations
such as "-ki" representing "-k" and "-i" will work, but may not in
the future.
The switch option "--" tells ARJ that there are no more switch
options to process in the current command line. This is useful
when you need to enter filenames beginning with "-".
Example: ARJ a archive -- -testfile
The standard ARJ file suffix is ".ARJ". Subsequent multiple volume
archives end in ".A01", ".A02", etc, up to .A99, .A00, .A01.
The ARJ command must be the first non-switch argument after "ARJ".
The ARJ archive name must be the first filename on the command
line. The base directory, if any, must be the second filename
argument. The switches and other filenames can be in any order.
The base directory name should end with "\" (backslash) or ":"
(colon). However, ARJ will still accept directory names without
the "\" character.
For commands other than modifying or creating an archive, you can
specify a wildcard for the archive name such as "*.ARJ". If you
also specify the "-r" switch, ARJ will search sub-directories for
ARJ archives (*.ARJ) also.
Example: ARJ l -r * will list all of your *.ARJ files.
Switches specified on the command line will either toggle or
override switches specified with the ARJ_SW environment variable.
Switch usage is identical to that of LHARC.
"-s+" turns on switch "s".
"-s-" turns off switch "s".
"-s" toggles the state of switch "s".
"-sname" provides the name argument for switch "-s".
"--" skip processing of any more switch options.
Wild_names follow MS-DOS convention. "*.*" means all files.
"*.DOC" means all files with an extension of ".DOC". "?B*.*"
means all files with a second character of "B".
The default for <wild_name> for all commands except for "d" is
"*.*".
For the add, move, freshen and update commands, filename matching
in the archive requires an exact path match depending upon the "-e"
option. For non-update commands, specified filenames with paths
will force a full pathname match.
You can supply one or more filenames for files containing lists of
files to be added to an archive. The filenames must be listed one
per line with no leading or trailing blanks. The list filename(s)
must be prefixed with "!". If you want to archive a filename
beginning with !, you must use the "-!" option to set a new list
file character.
You can exclude filenames/wildnames from the list of filenames to
be processed by ARJ.
Example: ARJ a software *.* -x*.exe -x*.obj adds all files
in the current directory except .EXE and .OBJ files.
ARJ COMMANDS:
a: Add files to archive
This is the basic command to add disk files to an ARJ archive.
You can specify 0 to 64 filename arguments (one can be a
destination directory). The arguments can be wildnames. If
you specify the "-r" switch (recurse subdirectories), ARJ
will add all of the files in all of the subdirectories that
match the specified wildname.
Example: ARJ a archive subdir\*.*
Archive all files in directory "subdir".
For maximum compression, use the "-jm" switch option.
c: Comment archive files
This command allows you to comment the header and individual
files. ARJ will prompt you for each comment. The user will be
prompted for up to 25 lines for each comment. A line containing
only a [return] will terminate the comment.
The user can elect to input comment data from a file by entering
the comment filename preceded by an "!" as in "!archive.txt"
starting in column 1 of the first comment line. This file is
read as a text file. The lines in the text can be up to 2048
bytes long. Only the first 2048 bytes of the file will be
accepted by ARJ.
To erase a comment from an archive, type [space] [return] on the
first comment line and [return] on the second comment line.
You may also erase a comment with the following command:
"ARJ c archive -zerase.txt" where erase.txt contains only a
[space] and [return].
To add only the archive comment and not file comments, use the
following command:
ARJ c archive -z
To add only the archive comment at the command line, use the
following command:
ARJ c archive -zcomment.txt
d: Delete files from archive
This command allows you to delete files from the archive. When
wildcard selection is not suitable, you can use the "-q" switch
which causes ARJ to prompt you for deletion for each file
selected.
Example: ARJ d archive *.c
Delete all files in archive ending in ".c".
ARJ d -q archive *.c
Prompt before deleting each file ending in ".c".
e: Extract files from archive
This command will extract one or more files from the archive to
the current directory or base directory if specified. ARJ will
prompt the user before overwriting existing files unless the
user specifies the "-y" switch. If the user gives a "no"
answer, ARJ will prompt for a new filename. If the user enters
a single [return] instead of a filename, ARJ will skip the
current file extraction.
Example: ARJ e archive soft\ *.c
Extract all files ending in ".c" to subdirectory
"soft".
When extracting a file located on multiple volumes, ARJ may
prompt the user with an "Append? " prompt. This will usually
occur with files split across volumes. You will also need to
specify the "-v" switch to force ARJ to continue to the next
volume of a series of volumes. When extracting from one of a
series of multiple volumes on a diskette, it is easier to use
the wildcard "*.*" to specify the archive as in:
ARJ e archive A:*.* filespecs
If you wish to extract only a portion of an archive and that
portion is a directory containing directories, you should use
the "-p1" switch. See the "-p" switch for more information.
If ARJ encounters a disk full during extraction, ARJ will abort
with an error. You can bypass the abort by using the "-jd"
option. Refer to the description of "-jd" for more
information.
f: Freshen files in archive
Update matching files in the archive that are OLDER than the
selected disk files.
Example: arj f archive *.c *.h
In freshening archives, you should use the same filename
specifications that you use to create the archive.
Example: arj a archive \temp\ *.* -r
arj f archive \temp\ *.* -r
i: check Integrity of ARJ
The "i" command allows the user to check the integrity of the
ARJ program. ARJ will report CRC ERROR! if the tested ARJ
program does not pass its integrity check. This indicates that
the program is probably corrupted. Please note that the "i"
command should not be used on a compressed ARJ executable
(DIETed, LZEXEd, etc.), since the "i" command will then ALWAYS
report a CRC error. If the program name is not specified, then
ARJ will check the current program being executed.
Syntax: ARJ i ARJ.EXE
ARJ i at DOS 3.0 and up
j: Join archives to archive
The "j" command allows the user to merge multiple ARJ
archives. You should not use the "o" command to reorder a
merged multiple volume archive because of the split files.
ARJ expects to find the pieces of a split file in consecutive
order.
Syntax: ARJ j archive archive1.arj archive2.arj
ARJ j archive *.arj -r
Some switches NOT supported by the "j" command are: -o, -ob,
-f, -u, -c, -d.
Note that switches that do work like "-x" select the archives to
be merged and NOT the contents of the archives.
This command can be used to convert an SFX module to a regular
ARJ archive.
Example: ARJ j new_name arjsfx.exe
l: List contents of archive
List contents of archive to standard output. The display can be
paused after each screenful with the "-jp" switch. The files
are listed in stored order. There are no sort options
currently.
The last field on the display TPMGVX stands for:
T -> text/binary/directory type
P -> path information available in "V" listing
M -> compression method used
G -> file has been garbled (encrypted)
V -> archive has been continued to another volume
X -> this file is an extended portion of a larger file
Example: arj l archive *.c *.h
A "+" sign preceding the date-time field indicates that the date
is a 21st century date (20nn).
The original file size reported by the "l" and "v" commands is
the actual number of bytes input during text mode compression.
This is usually the MS-DOS file size minus the number of
carriage returns in the file, since C text mode strips a file of
carriage returns.
m: Move files to archive
This command is similar to specifying the "a" command with the
"-d" switch. The "m" commands adds the selected files to the
archive. If the adds are successful, then the added files are
deleted. The move command does not ask permission before
deleting the files. Use the "ARJ a -d" command for that
feature.
Example: ARJ m archive soft\*.*
The "m" command when used with "-f" and "-u" will delete any
successfully added files as well as any files that are already
up to date in the archive.
n: reName files in archive
This command allows you to change the names of the files stored
in an ARJ archive. ARJ will prompt for the new name of each
selected file. You can skip changing the name of a particular
file by entering a blank line.
Example: ARJ n archive *.c
In the above example, ARJ prompts for new names for all *.c
files.
o: Order files in archive
This command allows you to re-order the files within the
archive. You may specify the order of files on the command line
or you can use one or more list files. Any files in the archive
that are not specified on the command line or in a list file
will be placed at the end of the archive in the same relative
order that they were originally. No wildcard names can be used
as order specifications. The filenames in the list file must be
entered one per line.
Example: ARJ o archive file1 file2 file3
In the above example, the files "file1", "file2", and "file3"
will be ordered first in the archive. Any remaining files will
follow those.
Example: ARJ o archive !list
In the above example, the archive will be ordered according to
the order of the names in the file "list".
IMPORTANT: For the "o"rder command, the list file option has
one special feature. If the list file is named ARJSORT.$$$, ARJ
will expect the file to have been built with the ARJ v -jv1
command. This ARJSORT.$$$ list file may be specified with a
pathspec. See the ARJSORT.BAT batch file for an example of this
special feature.
To facilitate building list files, the "v" command in ARJ will
produce special outputs with the "-jv" switch and the "-jv1"
switch.
The "-jv" switch will display only the pathnames stored within
the archive. No other listing data is displayed. This output
can be re-directed to a file for manual sorting into a list
file.
The "-jv1" switch will display the standard verbose display with
a few modifications. No comment field will be displayed. The
pathname is appended to the archive file description data
instead of being on a separate line. Displayed just before the
pathname field are the file extension and filename. These
fields are available so that the user can sort the text lines by
date-time, file extension, CRC value, etc. Text editors like
Qedit and SLED allow the user to sort text lines via an embedded
text field.
IMPORTANT: You should NOT change the order of files in a
multiple volume archive. ARJ expects the first file and the
last file in such an archive to have certain flags set.
Re-ordering the archive may cause problems with any split files.
At the next release of ARJ, re-ordering multiple volume archives
will be flagged as a error.
p: Print files to standard output
Output files to standard output. This function works such that
the output file will contain only the file data extracted. This
is important for UNIX-like usage.
Example: ARJ p archive manual.doc > output.fil
In the above example, output.fil will be an exact copy of
manual.doc. There will be no extraneous header information in
output.fil. All extraction phase information is written to the
STDERR device, which is normally the display screen.
NOTE: Because of a problem using fwrite() and STDOUT, errors
occurring during redirection to serial and printer ports may not
be detected. Errors during redirection to disk files will be
detected.
r: Remove paths from filenames
This command causes ARJ to remove the path component from the
specified filenames stored in the archive. The default is all
filenames stored in the archive. This command is useful if you
forgot to specify "-e" to exclude paths.
s: Sample files to screen with pause
This command is similar to the "p" command except that one
screenful of data is displayed to the user and a user action is
then requested. The action prompt can be suppressed with the
"-y" switch.
The "s" command filters the text to output by truncating at 79
characters per line and displaying '?' for control characters.
t: Test integrity of archive
Test the contents of the selected files for the correct CRC
value. ARJ uses a 32 bit CRC to validate the contents of the
files. The use of 32 bit CRCs is many times better than the
use of 16 bit CRCs for the detection of errors.
Use this command to fully test the security envelope on an
ARJ-SECURED archive.
u: Update files to archive
Update older files in the archive and add files that are new to
the archive.
Example: arj u software
v: Verbosely list contents of archive
This command lists the full pathname and comments of the archive
files as well as the same information as the "l" command.
Use the "-jp" switch to pause the output after each screen.
The "-jv" switch will display only the pathnames to the screen.
The "-jv1" switch will display the archive data in a manner
suitable for sorting on various fields for use with the "o"
command.
w: Where are text strings in archive
This option will cause ARJ to prompt the user whether to ignore
case when searching. It will also prompt the user whether to
display the context of any string matches. If so chosen, ARJ
will display the matched string and the following characters up
to 78 characters with all of the non-printable characters
including newlines replaced by question marks. When the display
context option is chosen, ARJ will inhibit the progress
indicator. When the option "-jv" is set in display context
mode, more context characters will be displayed up to the limits
shown below.
-jv = 6 lines, -jv1 = 12 lines, -jv2 = 18 lines, -jv3 = 24 lines
Then, this command will prompt the user for up to 20 text strings
to search for within the archive. A count of all matches will be
displayed after each individual file is scanned.
Search strings are limited to 79 characters.
Matches that span archive volumes will not be detected by
this string search.
You can search multiple ARJ archives with a command like:
ARJ w \docs\*.arj
x: eXtract files with full pathname
This command extracts one or more files from the archive to
their full paths in the current directory or to the base
directory if specified. ARJ normally stores pathnames as if
they were children of the target directory. Any drive or root
directory specifications are stripped before extracting unless
the "-jf" switch is specified with the "x" command.
Example: arj x archive *.c
If you wish to extract only a portion of an archive and that
portion is a directory containing directories, you should use
the "-p1" switch. See the "-p" switch for more information.
Refer to the description of the "e" command for more
information about extraction.
ARJ SWITCH OPTIONS:
The letters within the parentheses:
(All) - all commands
(afu) - add, freshen, update, move commands
(Upd) - any command that modifies/updates an archive
(ce) - comment and extract commands
(ex) - extract commands
(lv) - list commands
-: (All) skip any more switch options
The switch option "--" will cause ARJ to stop looking for any
more switch options on the command line. This is useful for
entering filenames beginning with "-".
Example: ARJ a archive -- -file
!: (All) set list char
This option allows the user to set the character used for list
files. The option "-!" with no specified character toggles
(turns off) the current list file character (default "!").
Syntax: ARJ a archive -!@ @list.fil
ARJ a archive -! !.bat
The first example above sets the list file character to the one
used by LHA and PKZIP.
$: (auex) add/extract volume label
This option allows the user to store or extract DOS volume
labels in ARJ archives. It is possible to have multiple labels
in one archive. At ARJ 2.10, you can only add or extract volumes
labels at DOS 2.0 and above. The "-$" option may be specified
with or without a drive specification. The drive can be
specified by appending the letter and optionally the ":" to
"-$". If none is specified, ARJ assumes the current drive
unless a specified target base directory has a drive
specification.
WARNING: Currently, ARJ allows multiple volume labels and
duplicate volume labels in the same archive. You can delete one
or more duplicate labels with the "ARJ d -q archive label"
command. ARJ will query you on each occurrence of "label".
This "faulty" mechanism allows a file and label of the same name
to be added to an archive. The capability of having duplicate
labels in the same archive MAY NOT be present in future versions
of ARJ.
The SFX and SFXJR modules DO NOT support volume label extraction!
On the list screen, volume labels will be indicated by the "V"
under the "T" column.
Syntax: ARJ a archive -$ add all files and the label
of the current drive.
ARJ a archive ... -$B add only the label of drive B
ARJ a archive ... -$B: add only the label of drive B
ARJ u archive ... -$B: add only the label of drive B
To extract volume labels, you must select the label by setting
"-$" and specifying a matching wildname/filename.
Syntax: ARJ e archive doslabel -$ extract the label named
doslabel to the current drive.
ARJ e archive -$D: extract all files to the
current drive and extract the
label to drive D:.
ARJ e archive label B:\ -$ extract all files to B:\ and
the label to drive B.
ARJ will display all labels over 8 characters with a "." in it
like a normal DOS filename. ARJ will only create standard
uppercase DOS volume labels.
Volume labels created by utilities other than standard DOS
commands like LABEL and FORMAT may cause label access problems
for ARJ. For example, Norton's VL.EXE can create labels with
lowercase letters. You will need to use LABEL.COM to delete
these labels in order to let ARJ set a new label. Programs that
can delete unusual labels have to do absolute writes to disk or
use a wildcard ("*.*") delete of files with the label attribute
in the root directory. A single bit corruption in the program
can result in the deletion of ALL files in the root. ARJ
currently chooses not to take that risk.
a: (afu) allow any file Attribute
By default ARJ will not select system or hidden files via
wildcarding unless the "-a" option is specified.
The "-a1" switch causes ARJ to add any directories in the
selected set of matching filespecs to the archive being built.
This switch also selects hidden and system files as in the "-a"
switch. Even empty directories will be added. The "l" command
will display such directories with a "D" under the "T" (file
type) header.
Older releases of ARJ will skip over empty directory entries.
The ARJSFX and ARJSFXJR modules CAN process empty directory
entries.
This option is useful for saving software directories with needed
empty directories.
b: (afu) Backup changed files
The "-b" switch will select only files that have the archive bit
set.
If you specify the "-b1" option, files with the archive bit set
will be selected and the archive bits of all archived files will
be reset after a successful archive has been built.
Example: arj a a:backup1 c:\*.* -b1 -r -va simulates BACKUP
command.
The "-b2" switch does NOT select files. It causes ARJ to reset
the archive bits of added files. If the "-f" or "-u" option has
been selected, ARJ will reset the archive bits of files that are
already duplicated in the archive.
Example: arj a e:archive c:\*.* -b2 -r archives all files on
the C drive and resets all archive bits.
c: (All) skip time-stamp Check
Normally with the "u" and "f" commands, ARJ will only update
files to an archive which are newer. The "-c" switch will cause
ARJ to update the archive regardless of the date-time modified
time stamps.
When extracting files from an archive with the "-y" and "-f"
switches set, ARJ would normally skip extracting older files.
The "-c" switch will force ARJ to extract these older files.
d: (afu) with Delete (move)
This switch provides the standard MOVE command. Successfully
added files will be deleted. When used with the "-f" or "-u"
option, ARJ will also delete files that are already duplicated
in the archive. ARJ will prompt the user before deleting the
files unless the "-y" switch is specified. Also, you can use
the "m" command which does not prompt before deleting the files.
ARJ a archive filename -d -y is equivalent to
ARJ m archive filename and
ARJ a archive filename
delete filename
e: (afu) Exclude paths from filenames
By default ARJ always stores the pathname of the archived file.
This switch will cause ARJ to store only the filename component.
The "-e1" switch option causes ARJ to NOT store the base
directory name with the filenames in the archive.
Example: ARJ a archive C:\SOFTWARE\ARJ\ *.* -r -e1
In the above example, ARJ will NOT store the C:\SOFTWARE\ARJ\ as
part of the filenames.
When updating files within an archive, ARJ uses the full
pathname to match against the full name of the selected files.
The "-e" and "-e1" option affect this exact matching. If "-e"
is specified, only the filespecs of the selected files will be
matched against the full pathname of the files in the archive.
If "-e1" is specified, the full pathname minus the base
directory of the selected files is used to match against the
full pathname of the files in the archive.
In other words, ARJ will only update a file within an archive if
the name of the new file as stored in the archive would be
identical to the name of the original file stored in the
archive.
f: (All) Freshen existing files
This switch used with the "e" or "x" commands causes ARJ to only
extract newer files from the archive.
This switch used with the "m" command causes ARJ to update only
input files with newer dates than the ones in the archive.
After the archive has been updated, all updated selected files
and all up to date selected files will be deleted.
The ARJ m -f command is very similar to the LHARC m command.
g: (All) Garble with password
This switch followed by a password "-gpassword" will encrypt or
decrypt an archived file. During a "l" or "v" command, a
garbled file will display an "G" after the method number.
Example: ARJ e archive -gpassword
i: (All) with no progress Indicator
Do not display the percentage progress indicator. The progress
indicator appears during the add, extract, search, and test
operations.
The "-i1" option provides a bar type graphical progress
indicator for the compression, extraction, and testing type
commands of ARJ. This provides an alternative to the simple
numeric increasing percentage progress indicator.
j: (All) selects alternate set of switch characters.
This switch toggles the set of switch characters. The toggle is
reset at end at of each separate switch sequence back to the
main set of switch characters.
For example, "-ja" is not the same function as "-a". However,
"-jja" is the same as "-a" because of the double toggle. Also,
"-jaje" is NOT the same as "-ja -je". The switch sequence
"-jae" is the same as "-ja -je".
k: (Upd) Keep archive file backup
Backup the original archive file during an update. The old
archive will be suffixed with ".BAK". Any existing ".BAK" file
will be overwritten.
l: (All) create List_name file
This switch will cause ARJ to dump to the filename after the
"-l" switch all of the filenames to be processed by this ARJ
command. This list contains all files that matched the file
wildnames given on the command line. Other options do NOT
affect the output of filenames to this list file. To get an
index file for backup purposes, use the "-ji" option.
This list file can be used as a listfile on the command line.
Example: ARJ a -lname.lst archive *.exe
This example will create a file named "name.lst" with all *.exe
files.
m: (afu) with Method 0, 1, 2, 3, 4
Method 0 = storing (no compression)
Method 1 = maximum compression (default compression method)
(requires 282,000 plus bytes memory)
Method 2 = slightly less compression and faster
(requires 282,000 plus bytes memory)
Method 3 = less compression and less memory and faster
(requires 249,000 plus bytes memory)
Method 4 = fastest compression
(requires 235,000 plus bytes memory)
Method 2 (-m2) provides an excellent combination of speed
and size reduction.
Example: ARJ a archive *.exe -m2
The "-jm" option will usually improve the size reduction of
methods 1 and 2 at the cost of speed and memory. The behavior
of "-jm" with -m3 and -m4 is UNDEFINED.
Method 4 uses a different decoder than 1 to 3.
n: (All) only New files (not exist)
With the "e" or "x" commands, extract files that do not exist in
the target directory.
WIth the "a" or "m" commands, archive files that do not exist in
the target archive.
o: (All) On or after date YYMMDDHHMMSS
The switch "-o" by itself means select files modified today. If
"-o" is followed by a date and optionally a time, ARJ will only
select files modified on or after that date-time.
Example: ARJ a test -o9001021700 means select files modified
on or after Jan 2, 1990, 5:00 PM.
Years less than "80" will be considered as 21st century years.
There is no option for using other date-time formats.
The switch "-ob" selects files modified before today. If "-ob"
is followed by a date and optionally a time, ARJ will only
select files modified before that date-time.
p: (All) match using full Pathnames
When "-p" is specified, ARJ looks for an exact pathname match.
This can be modified by the "-e" option.
For non-update commands and specified filenames with paths, ARJ
will match the full path with or without the "-p" switch.
To match directory paths that contain subdirectories, you should
use the "-p1" switch. This switch sets ARJ to match only the
initial portion of the pathnames against the wildnames
specified. For example, if your archive contains the TURBOC++
directory named TC and you wish to extract the INCLUDE
subdirectory along with the subdirectory INCLUDE\SYS, you can
use the following command:
ARJ e archive TC\INCLUDE\*.* -p1
If you wanted to extract all of the INCLUDE\S*.* files including
the contents of the SYS subdirectory, you can use the following
command:
ARJ e archive TC\INCLUDE\S*.* -p1
q: (All) Query on each file
This switch causes ARJ to prompt the user prior to acting upon
each archived file for all but the "j", "l", "t", "v", and "w"
commands. This allows you to selectively delete, add, etc.
r: (All) Recurse subdirectories
This switch will cause ARJ to recurse any wildcards specified on
the command line including ARJ archive filenames by traversing
all subdirectories scanning for matches.
ARJ will also recurse non-wildcard filenames as in:
ARJ a archive FILE.BBS -r
s: (Upd) set archive time-Stamp
This switch causes ARJ to set the date-time stamp of the archive
to that of the newest file in the archive.
This option will also work with non-update commands as in:
ARJ l archive -s ...
The "-s1" switch is used to keep the old archive date-time
stamp. The new archive will have the same timestamp as the
original archive.
The "-s2" switch is like the "-s" switch except that it only
works for archive modification commands. This makes it more
suitable for use in the ARJ_SW environment variable.
t: (afu) set file Type
This switch causes ARJ to open and read the file to be archived
in binary or text mode. The default is binary mode (-t0). To
archive in text mode, use the -t1 switch. The "-t" switch is
equivalent to "-t0".
If you specify the switch "-t0", ARJ will always use the binary
mode even for freshening text mode files already in the archive.
The file type "text" is only needed for future cross platform
transfers of ARJ archives. It enables ARJ to extract text files
to the host file system with the text newline sequence that is
correct for that operating system.
However, this mode may produce slightly better size reduction.
The "-t1" option combined with "-jh65000" can produce some of
the best size reduction numbers. Extraction of files compressed
in text mode is significantly slower than the extraction of
binary files.
DO NOT use the text mode on non-text files!!! On non-text files
ARJ will prematurely stop input if it finds an embedded EOF
character (CTL Z). This will produce a LOSS of data on binary
files. Graphics characters and some printer control characters
are considered non-text. The "-t1" options strips the text to
7-bit characters.
ARJ will look at the first 4096 bytes of the input file looking
for 8-bit non-text data. If ARJ finds any 8-bit data, it will
automatically backtrack and switch to "-t0" (default) binary
mode for that particular file. In addition at the end of
compressing the input file, if ARJ finds that the input file
size is not greater than 75 percent of the binary file size
(size on disk), ARJ will report an error for that input file and
increment the error count. This should help avoid the problem of
accidentally compressing executable files with the "-t1" option
which results in lost data. These tests are not foolproof.
The original file size reported by the "l" and "v" commands is
the actual number of bytes input during text mode compression.
This is usually the MS-DOS file size minus the number of
carriage returns in the file, since C text mode strips a file of
carriage returns.
u: (All) Update files (new and newer)
This switch used with the "e" and "x" commands causes ARJ to
extract newer and non-existing files.
This switch used with the "m" command causes ARJ to update only
input files with newer dates than the ones in the archive and
add new files to the archive. After the archive has been
updated, all added files and updated selected files and all up
to date selected files will be deleted.
v: (All) enable multiple Volumes
This switch is required to put ARJ into multiple volume mode.
This switch allows the creation of multiple volumes in the ADD
mode. The command "arj a a:arjvol \*.* -b -r -v360000" allows a
user to backup up all files changed since the last backup to
multiple floppy disks. ARJ will pause between volumes to allow
changing disks. Subsequent volumes will be suffixed .A01, .A02,
.A03, ... , .A99, .A00, .A01, etc.
Archived files can be split across volumes. ARJ will try to
fill each volume to within 200 to 3000 bytes of specified
maximum size.
The command "arj x a:arjvol -v" would restore files starting
from arjvol.arj. You must specify the entire ARJ volume name
including the .Ann suffix when starting from the middle of a
series of volumes.
The pauses between volumes can be suppressed with the "-y"
switch. You should not suppress the pauses when archiving to
diskettes or extracting from diskettes. The "-jy" option will
allow you to suppress specific types of queries.
Because of the splitting process, archived split files with a
size of zero bytes are possible. This is not an error.
If you comment your archives with long comments, you should take
that into account when specifying volume size. You should
specify a smaller volume size during the "a" command before
adding the comments.
The "-v" switch will accept the abbreviations 360, 720, 1200,
and 1440. These will be translated to 362,000, 730,000,
1,213,000, and 1,457,000 bytes, respectively. Please note that
if the available disk space is less than the requested amount,
ARJ will prompt the user for permission to continue.
You can use the "K" modifier as a shortcut for "000". For
example, 100K means 100000. "K" does not mean 1024.
The "-vv" switch turns on the next volume beep option. When you
select this option, ARJ will sound a beep prior to the next
volume. The "v" modifier must come before any other modifier.
The "-va" switch sets the disk space auto-detect option. ARJ
will check for the disk space available on the target directory
and try to use all or most of it. This option is aimed at
diskette usage. Please note that this switch option detects
free disk space. It does not detect formatted disk space.
Examples: ARJ a A:backup -b -va
ARJ a backup -v360
The switch modifier "s" can be used to make ARJ execute one
specified system command prior to each volume or make ARJ pause
for manual execution of system commands. This is useful for
purging target diskettes before ARJ writes to them. The "s"
modifier must follow the "a" modifier or the volume size.
Optionally, after the "s" modifier, you can specify a system
command or batch file name. ARJ will automatically execute the
command or batch file before each volume. If the command has
embedded blanks, then the entire switch option must be
surrounded by double quotes. The system command is executed
before ARJ executes the auto-detect space option.
Examples: ARJ a A:backup -vas
ARJ a A:backup -vvas
ARJ a A:backup -v360s
ARJ a A:backup -vv360s
ARJ a A:backup -vaspurge.bat
ARJ a A:backup -v360sdelete.bat
ARJ a A:backup "-vasFORMAT A:"
ARJ a A:backup "-vasDIR C:\ "
Note that the last example has a space before the last double
quote mark. If the last space is missing, the internal command
line parser will make the double quote mark part of the DIR
command.
Volume archives can be used as stand-alone archives save for the
files that are split across volumes.
It is recommended that the "-jt" (test archive) option be used
with the "-v" switch to ensure perfectly built volumes as it is
tedious to retest volumes after they are built.
During ARJ operation in non-update commands, ARJ will not abort
when it cannot open the correct sequential ARJ volume archive.
It will report the open error and proceed to the "Ok to process
the next volume?" prompt. At this point it is possible to swap
diskettes to put the correct volume in place. This feature is
disabled if the "-y" option has been specified.
For those who have enough free hard disk space, the -v option
can be used to make backing up the hard disk fairly easy. ARJ
can be set to create multiple floppy sized volumes on the hard
disk for later copy to diskettes. So even if ARJ is slow, you
can fire up an ARJ backup and some time later, you can quickly
copy the volumes to floppies. Below are sample backup commands:
arj a backup *.* -b2 -r -v360 -y -jt -js full backup
arj a backup *.* -b1 -r -v360 -y -jt -js incremental backup
See the "-jn" and "-jx" options to see how to recover from an
abort in the middle of a backup type operation.
WARNING: Updating multiple volume archives with the "-v" switch
set is NOT recommended, especially if the new file sizes are not
identical.
TIP:
To pre-determine the number of diskettes required to archive a
set of data, you can take advantage of the "s" option of the
"-v" switch. The "s" option lets you execute a DOS command
prior to each volume. You can specify a command that deletes
the previously created archive volume. This lets you use the
same floppy diskette/hard disk space to build the multiple
volumes.
Example: ARJ a -r "-vasdel a:volume.a??" -y a:volume c:\*.*
w: (Upd) assign Work directory
By default, ARJ builds a new ARJ archive file in the same
directory as the old archive file. By specifying the "-w"
switch, you can specify the working directory where the
temporary archive file will be built. After the temporary
archive file is built, it is copied over the original one and
deleted.
Normally ARJ requires enough disk space for the original archive
and the new temporary archive. Specifying the "-w" switch
allows you to move some of that disk space requirement to
another directory.
If the copy of the temporary archive on top of the original
archive fails, you will have to manually do the copy. ARJ will
not delete the temporary archive in this error situation.
Example: ARJ a -we:\temp\ archive *.c
x: (All) Exclude filenames
This switch is used to exclude filenames or wildnames from the
list of filenames to be processed.
Example: ARJ a archive soft\*.* -r -x*.exe -x*.obj -xtest
This example will archive all files in the soft directory and
sub-directories with the exception of any files named "test"
or ending in ".exe" and ".obj".
You can also specify an exclude file list by preceding the
filename with the list character "!". The exclude file list
must contain a list of filenames/wildnames one per line with no
leading or trailing blanks.
Example: ARJ a archive soft\*.* -r -x!exclude.lst
The "-x" option also allows you to exclude an entire path
including subdirectories from being selected for processing.
Syntax: ARJ a archive C:\*.* -xC:\TEMP\
The "\" after C:\TEMP indicates to ARJ that everything below
C:\TEMP\ is to be excluded.
Note that the exclude directory option requires that the
directory be specified in the same relative path that the
selected files use.
Example:
arj a archive \temp\*.* -x\temp\firstdir is correct usage
arj a archive \temp\*.* -xC:\temp\firstdir is NOT correct because
of the C:
The "-x" switch also works for non-update commands like
"e"xtract and "l"ist.
Examples:
arj e archive -x*.exe extract all files except *.exe files
arj l archive -x*.exe -x*.obj list all files except *.exe and *.obj
A maximum of 8000 filenames or wildnames can be excluded.
y: (All) assume Yes on all queries
Use this switch for batch type uses of ARJ. This switch
disables most of the normal user queries during ARJ execution.
Use this switch to suppress overwrite queries in the "e" and "x"
commands, to suppress the make new directory query in the "e"
and "x" commands, to suppress the new filename prompt when an
open file operation fails in the "e" and "x" commands, to
suppress the pause during the "s" command and to suppress the
next volume pause using the "-v" option.
Use this option with due caution, especially during extraction
as this sets ARJ to overwrite files. However, the "-n" option
can be used to avoid any overwriting.
As an alternative, you can use the "-jy" option which lets you
suppress individual types of user queries.
z: (ce) supply file for archive comment
The "-z" switch has been provided to facilitate batch commenting
of ARJ archives with the "c" command. When the "-z" option has
been specified with or without a comment file, ARJ will only
process the archive header comment and will skip any file
commenting unless the "-jz" switch has been specified.
A comment file containing only a single blank can be used to
erase comments from ARJ archives.
Syntax: arj c archive -z
arj c archive -zcomment.txt
The "-z" option also allows one to dump the ARJ archive header
comment to a file. This will only extract the main archive
comment and not the individual file comments.
Syntax: arj e archive ... -zcomment.txt dumps only the comment
arj x archive -zcomment.txt dumps comment and files
ja: (All) show ANSI comments
Display any ANSI escape sequences unaltered. By default, escape
characters in comments are not displayed. Not displaying ANSI
command is the default because of ANSI BOMBS. Using ANSI
commands, it is possible to redefine the keyboard of users using
certain ANSI drivers. For example, a key could be redefined to
"echo y | del \*.*".
jc1: (All) disable Console RAW mode check
ARJ tests the console device for RAW mode. If the console is in
RAW mode, ARJ will use cgets() instead of fgets() for input.
This prevents ARJ from hanging the system.
If this feature causes a problem with your system, you can
disable this test feature with the "-jc1" switch.
jd: (exlv) ensure free Disk space
In extraction mode, this option causes ARJ to always ensure that
it will leave the user specified amount of disk space available.
ARJ will skip files that would exceed the disk space available
limit. Files that are skipped will each count as an error. The
default free space is zero bytes.
Example: ARJ e archive basedir\ *.doc -jd100K
In the above example, ARJ will not extract any files that will
cause the disk free space to be less than 100,000 bytes. The
"K" is a synonym for "000". For example, 100K means 100000.
In "l"ist or "v"erbose list mode, this option sets an error
check at the end of the listing screen based upon the total of
the original sizes of the files selected. If the total size
would exceed the user specified free space limit, ARJ will
report an error at the end of the listing screen.
Example: ARJ l archive *.doc -jd10000
In this example, ARJ will report an error if the current
available disk space minus the total of the *.doc files is less
than the specified minimum of 10,000 bytes.
Example: ARJ e archive *.* -jd0
In this example, ARJ will skip extraction of any files that
would result in a disk full error.
je: (Upd) create self-Extracting archive
This option causes ARJ to create a self-extracting .EXE file
instead of an .ARJ file. This self-extractor is about 14500
bytes in size and supports full pathname extraction. The "-je1"
switch creates a smaller self-extracting .EXE file. The
ARJSFXJR module is less than 5400 bytes in size.
The SFX modules do NOT support multiple volume archives. That
would serve little purpose because you would have to distribute
multiple files. In this case, DEARJ (available to registered
users) would serve adequately. DEARJ supports all of ARJ
extraction functionality including multiple volume archives.
At ARJ 2.10, the SFX executable modules are pre-compressed using
LZEXE. This may cause false indications with EXE scanning
programs showing that an ARJ SFX archive is a LZEXE compressed
file. Only the executable header module is LZEXE compressed.
The actual archive is ARJ compressed, of course.
The current commands ARJSFX supports are:
Usage: ARJSFX [-command] [-switch(s)] [directory\] [file(s)]
Commands:
e: Extract files v: Verbosely list contents
l: List contents x: eXtract files with pathname (default)
t: Test contents
Switches:
a: show ANSI comments n: only New files (not exist)
c: skip time stamp Check p: match with Pathname
f: Freshen existing files u: Update files (new + newer)
g: unGarble with password y: assume Yes on queries
NOTE!!! ARJSFX uses the "-" character before all commands and
switches. This is to allow extraction of files named e, l, etc.
The default ARJSFX command is "-x" extract files with pathnames.
When extracting pathnames, ARJSFX will prompt for permission to
create new directories unless the "-y" option is specified.
ARJSFX will create absolute or relative directories depending
upon whether the root directory has been stored in the pathname
in the archive. Saving the root is done using the "-jf" option.
To avoid extracting to paths, the archive creator should use the
"-e" option to exclude path specs. The user extracting the SFX
module can specify the "-e" command to extract to the current
directory.
ARJSFX does not support compression method 4.
The ARJSFX module supports the ARJ-SECURITY envelope feature by
itself. The ARJ-SECURITY feature is only available as a
licensed option. It is intended as a feature for software
developers.
ARJ will create a self-extracting module without an intermediate
archive file.
Example: ARJ a software *.* -je
If you want to make a self-extracting module from an ARJ
archive, use the freshen command with a non-existent filename
argument such as "...". In this case, ARJ will report the
self-extractor created with 0 file(s). The 0 file(s) indicates
that no files were modified during the self-extractor creation.
Example: ARJ f software ... -je
IMPORTANT: When executing an ARJSFX module on a system with the
CONSOLE device set to RAW mode, the ARJSFX module will abort on
user input to avoid hanging the system. Use of the "-y" switch
on the command line will avoid the problem.
Example: ARJ210 -y
The ARJSFXJR module created with the "-je1" switch is a
stripped-down version of ARJSFX. ARJSFXJR does not accept any
command line options. It does not support method 4 or text mode
"-t1" or garbled "-g" archives. An ARJSFXJR module containing
files with pathnames will extract to the paths. ARJSFXJR will
automatically create directories as needed to build the paths.
Example: ARJ f software ... -je1
Both the ARJSFX and ARJSFXJR modules will by default extract to
relative/absolute path specs if the archive contains
relative/absolute path specs.
More examples:
Build an SFX module with absolute pathnames for extraction to
the absolute pathnames:
ARJ a -r -je -jf DISTRIB \product\*.*
The user need only type "DISTRIB -y" to automatically recreate
the "product" directory on the current drive.
Build an SFX module with relative pathnames for extraction to
relative pathnames:
ARJ a -r -je DISTRIB \product\*.*
The user need only type "DISTRIB -y" to automatically recreate
the "product" subdirectory in the current directory.
Build an SFX module with relative pathnames for extraction to
relative pathnames excluding the base directory:
ARJ a -r -e1 -je DISTRIB \product\ *.*
The user need only type "DISTRIB -y" to automatically recreate
the files and subdirectories of the "product" directory in the
current directory.
Build an SFXJR module with filenames (no path specs).
ARJ a -e -je1 DISTRIB \product\*.*
The user need only type "DISTRIB" to automatically extract the
entire contents of "DISTRIB.EXE" to the current directory.
jf: (afux) store/use Full specified path
Normally, ARJ will strip all pathnames of drive letter and root
symbol. This switch disables this action. When extracting with
the "x" command from an archive that was built with this switch,
ARJ will normally strip any drive letter and root symbol, unless
the "-jf" option is specified again.
The "-jf1" option will strip only the drive spec and NOT the root
symbol. You can use either the "-jf" or "-jf1" option during
extraction to force use of the root directory.
jh: (afu) set Huffman buffer size
ARJ has a default static Huffman buffer size of 16384 bytes.
This buffer size is better for compressing executable files.
The buffer size in ARJ 0.15 and earlier was set to 65500 bytes.
That size is better for large text files. You may specify a
buffer size from 2048 to 65535 bytes.
Example: ARJ a archive *.txt -jh65500
ji: (afu) set Index filename
The "-ji" switch is used to create an index file containing the
filenames archived. This is especially helpful when using ARJ
to do multiple floppy type archives. This file SHOULD NOT be
created on the floppy diskette if the floppy diskette is changed
during the archival process.
The index file contains two types of text lines. The first type
is the volume name record. It contains the date, time, starting
file position, and the archive name. The second type is the
filename record. It contains only the filename.
This information is also useful for restarting "-v" multiple
volume archives. You need the filename and the starting file
position.
jk: (Upd) Keep temp archive on error
When the "-jk" switch has been specified, ARJ will keep the
temporary archive during an aborted archive build/update. During
a failed build, ARJ will modify the temporary archive to make it
useable by removing the broken portion.
jm: (afu) set Maximum compression
The "-jm" switch sets the maximum compression mode. This mode
changes both method 1 and method 2 to the maximum compression for
those methods. This may increase compression time significantly.
You can get a 1 to 8 percent improvement in compression with
ARJ -m1 -jm.
The "-jm1" option provides slightly less compression than "-jm"
at a faster speed. This can range from slightly faster to much
faster.
Usage of "-jm" with "-m3" or "-m4" is NOT to be relied on.
jn: (afu) set restart Name
The "-jn" switch is used to restart interrupted multiple volume
archives in conjunction with the "-jx" switch. All selected files
are skipped up to but not including the named file.
Example: ARJ a volume -v360 -r -jn\BIN\TREE.COM -jx1230
In the above example, all files scanned up to \BIN\TREE.COM are
skipped. Archiving will start at file position 1230 of file
\BIN\TREE.COM.
IMPORTANT!!! The exact name of the starting file must be specified
according to the wildnames/filespecs specified. This name is the
same as displayed by the Adding filename display and the same as
written to the "-ji" index file. Please note that \DOS\TREE.COM is
not considered the same as DOS\TREE.COM with this option.
jo: (am) query when updating file
The "-jo" switch is used to query the user when using the ARJ "a"
or "m" commands to add files to an archive. Before ARJ
overwrites an existing internal archive file when using "-jo",
ARJ will query the user with "Update <filename>? ". Without this
option, ARJ will overwrite the internal archive file without
querying.
jp: (lv) Pause after each screenful
This switch will cause ARJ to pause after listing each screenful
of data for the "l" and "v" commands. Press the ENTER key to
continue the listing. You can also enter "quit" to exit ARJ.
In one special case, "ARJ -? -jp", the use of the -jp switch
toggles page pauses off, because by default in help mode,
pausing is on.
jr: (All) Recover broken archive files
This switch is used to access headers and files in an archive
that has been corrupted either with bad data or missing data.
This switch lets ARJ find the next valid header for listing,
extraction or testing. ARJ will continue to look for headers
until it finds the end of file. At that point ARJ will print an
error message stating that it encountered the end of file
unexpectedly. This is to be expected.
If file header data has been corrupted, ARJ will be unable to
recover any file data associated with that header. If file data
has been corrupted, ARJ will abort but not delete any extracted
file data. To continue recovering from such a corrupted
archive, simply specify one filename to extract at a time or use
the "-q" query switch to prompt for individual files.
Example: ARJ e archive -jr -q
js: (afu) Store archives by suffix
This switch is used to force ARJ to store and not compress files
with the following extensions: .ARJ, .ZIP, .LZH, .PAK, .ARC.
The file extensions can be specified as follows:
ARJ a archive -js.zoo.ice.gif
The above command will store files with extensions ending in
.ZOO, .ICE, and .GIF. This overrides the defaults.
You can use the environment variable ARJ_SW to set up your own
defaults as follows:
set arj_sw = -js.arj.zip.lzh -js-
The "-js-" turns off the option by default so that when you
specify the "-js" switch on the command line, ARJ will already
know what extensions you want to store.
jt: (Upd) Test temporary archive
This switch causes ARJ to execute an archive integrity check on
the intermediate temporary archive before overwriting any
pre-existing original archive. If any error occurs, ARJ will
not overwrite the original archive. When used with the "-w"
switch option, ARJ will also test the final archive file as well
as the temporary archive before deleting any input files.
Example: ARJ m archive *.c -jt
ju: (All) translate UNIX style paths
This switch causes ARJ to translate any subsequently encountered
pathnames to MS-DOS style from UNIX style. This switch also
causes translation of filenames entered as a result of ARJ
prompts such as in comment filenames.
Example: ARJ a archive -ju /soft/*.c
jv: (All) set Verbose display
This switch sets ARJ to display more information during the
"t"est, "l"ist, and "ex"tract commands.
Example: ARJ t archive -jv
The "-jv" switch causes the "v" command to display only the
pathnames to the screen.
The "-jv1" switch causes the "v" command to display the archive
data in manner suitable for sorting on various fields.
The "-jv" ... "-jv3" options can be used with the "w" (where is
text) command to set a larger context display. See the "w"
command for more information on using "-jv".
jx: (afu) start at eXtended position
This switch is used to continue a file on another archive
manually. This switch is normally for use when a multiple
volume "a" command has aborted.
Example: ARJ a arjvol.a01 manual.doc -jx100000
This example archives manual.doc starting from file byte
position 100000 and on.
jy: (All) set individual Yes flags
This switch is used to suppress individual ARJ user prompts.
Syntax: ARJ e archive -jy<flags>
where <flags> is one or more of the following characters:
a, c, d, k, n, o, s, v. ARJ will assume YES for each flag
selected.
A - skip append query during a multi-volume extraction
C - skip create directory query
D - skip delete files query
K - skip disk space availability query
N - skip new filename prompt
O - skip overwriting existing file query
S - skip scanned enough text query
V - skip ok to proceed to next volume query
Example: ARJ x volume -v -jyaco
selected append, create, and overwrite "yes"es.
jz: (c) supply file for file comment
The "-jz" switch has been provided to facilitate batch
commenting of one or more files within an ARJ archive. Only one
comment file can be specified. That file will be used to
comment each file specified on the command line.
A comment file containing only a single blank can be used to
erase comments from ARJ archives.
Syntax: arj c archive file1 -jzcomment.txt
arj c archive file1 -zheader.cmt -jzfile.cmt
ARJ_SECURITY ENVELOPE:
The ARJ-SECURITY ENVELOPE feature provides a facility similar to
other archivers. This feature disallows any type of modification,
even commenting, to an ARJ-SECURED archive by ARJ. Moreover, there
are additional internal checks to determine if the ARJ-SECURED
archive has been modified in any way. This feature is intended for
use by software developers who distribute their software in
archived format and is only available for a special fee. However,
there can be no guarantee that this mechanism cannot be defeated.
In normal use, ARJ will display one of two messages when processing
an archive with a valid ARJ-SECURITY envelope. ARJ will either
state that the archive MAY have a valid ARJ-SECURITY envelope or
that the archive HAS a valid ARJ-SECURITY envelope. ARJ can only
be sure that the envelope is valid when the "t", "e", or "x"
command is executed on ALL of the archived files. In order to
fully test the security envelope of an archive, use the "t" command
as in "ARJ t archive".
If the security envelope has been tampered with or the archive has
suffered data corruption, ARJ will display a message stating that
the security envelope has been violated.
KNOWN ARJ ISSUES/PROBLEMS:
When using a working directory, ARJ does not check for disk space
before overwriting the original archive. Be sure you have enough
space before updating an archive using the "-w" switch.
DO NOT continue to use older versions of ARJ earlier than 0.15a.
ARJ archives that have been created with 2048 byte sized comments
will produce unpredictable results when processed by older versions
of ARJ.
Because of a bug with extended archive header processing, you
should convert to ARJ 2.10 as soon as practical. This bug is NOT a
current problem because no version of ARJ supports the use of the
extended header.
There is a reported problem using ARJ and floppy disk drives when
using the disk cache program SUPER PCKWIK 3.30 with advanced
diskette support (/D+). The system will occasionally hang when ARJ
attempts to read/write the diskette. Disabling the SUPER PCKWIK
option with /D- appears to remove this problem. Other programs
have similar problems with this feature of SUPER PCKWIK. Other
cache programs like PC-TOOLS PC-CACHE 5.5 and 6.0 do not have this
problem with ARJ.
ARJ TECHNICAL SUPPORT:
I have received many useful suggestions from users all over the
world. Many of those suggestions are in this version or will be
incorporated in later versions of ARJ.
I will try to resolve software problems with ARJ as they are made
known to me. Please notify me of any ARJ problems by mail, email
or via the ARJ support BBSes mentioned below. Despite the fact
that ARJ is free for many users, I will strive to make ARJ a
robust, stable and useful product for all users.
To ensure a reply when using the postal system, please enclose a
stamped self-addressed envelope with your correspondence. Keeping
up with the ARJ mail has become expensive. Foreign corresponders
should include currency or postal coupons instead of stamps.
Otherwise, I may be unable to answer your correspondence.
As of this ARJ version, only users who have provided some form of
support to ARJ should request technical support.
Your financial support is needed for the ARJ archiver and format to
succeed.
ARJ AVAILABILITY:
The latest version of ARJ can be obtained from the following
sources:
ARJ SUPPORT BBSes: See ARJ_BBS.DOC
ARJ is available from a number of other BBS's, but I can only vouch
for the integrity of the archive if the ARJ210.EXE verifies its
ARJ-SECURITY envelope as valid. If no security envelope exists,
then the data has been re-archived and there is no assurance of
data integrity.
If none of the above sources are suitable, you may order a copy of
the latest version of ARJ directly from the author.
Send a check or money order for five dollars (US) to cover the
costs of shipping and handling for U.S. delivery. For foreign
delivery, send ten dollars (US) to cover shipping and handling.
Please specify diskette size (3.5 or 5.25 inch); otherwise, a 5.25
inch diskette will be shipped. Please allow a few weeks for
delivery, longer for foreign deliveries.
Robert Jung, 2606 Village Road West, Norwood, Massachusetts 02062
DISTRIBUTORS:
The following are my authorized distributors for ARJ:
In Germany:
C.A.T. Kommunikations-System Internet: arj@cat.de
Systemberatung A. Dunkel SubNet: arj@cat.sub.org
Robert-Schuman-Ring 37 FidoNet: 2:243/12
D 6239 Kriftel, Germany Mailbox: (06192) 42054 (2400 Baud)
(06192) 42057 (19200 PEP)
NUA: 45619270055
ACKNOWLEDGEMENTS:
LHARC is the name of an archiver by Haruyazu Yoshizaki.
PKZIP and ZIP are trademarks of PKWare, Inc.
PAK is trademark of NoGate Consulting.
I wish to express my gratitude to Haruyasu Yoshizaki (Yoshi) for
developing LHARC and distributing its source code. LHARC gave me
the impetus to start studying data compression. I also wish to
thank Haruhiko Okumura for providing additional ideas. His AR001
and AR002 program provided the basic design for the early versions
of ARJ. Much has happened to the ARJ design since then. In fact,
only a small percentage of ARJ is derived from AR source code. The
most important part of ARJ, the LZ77 compression routine, is new
and original.
I also wish to thank Fabrice BELLARD for LZEXE which is used to
squish the ARJ SFX modules.
I wish to thank those who have helped in the development of ARJ.
Those include Ron Freimuth, Michael Lawler, Arkady Kleyner, Joseph
Teller, Mike McCombs, Brian Godette, Robb Hufalt, Axel Dunkel and
Jonathan Forbes. And to the many others who have helped or
provided messages of support, THANKS!
I wish to thank my wife, Susan, and my son, Timothy, for putting up
with this ARJ obsession for the last several months. Without their
encouragement and support, ARJ would never have come to be.
But my greatest thanks goes to Almighty God for His inspiration and
great salvation.
USAGE AND DISTRIBUTION POLICY:
See LICENSE.DOC file for license policy.
ARJ, REARJ, ARJSFX, and ARJSFXJR contain no DES technology or any
other government protected technology. As far as I can determine,
ARJ, REARJ, ARJSFX, and ARJSFXJR may be exported and used outside
the U.S. and Canada.
FINAL COMMENTS:
I do hope that you find this program as useful as I have. I would
appreciate any suggestions to improve this archiver.
I can be reached at:
Robert Jung at the Wonderland BBS (617) 965-3036
Robert Jung at the Dimensional Crossroads BBS (508) 427-5379
Robert Jung at the Bay State BBS (617) 598-6646
Robert Jung at FIDONET address: 1:16/390.7
Robert Jung in the COMPRESS (ILINK), LHARC / COMPRESSIONS
(SMARTNET), SHARE (RIME) or ARCHIVERS (RELAYNET) echo conferences.
2606 Village Road West
Norwood, Massachusetts 02062
Internet address: robjung@world.std.com
Compuserve users can enter >INTERNET: robjung@world.std.com
at the "Send to" prompt. I prefer CompuServe users to send mail
to this address as opposed to my CompuServe userid below.
CompuServe userid: 72077,445 (Checked once or twice a week)
End of document
ARJSORT.DOC
ARJSORT April 1991
ARJSORT.BAT is a batch file provided to give the user the facility to
sort the files in an ARJ archive. ARJSORT allows sorting by file
attribute, CRC value, date-time modified, file extension, filename,
pathname, and compression ratio. The sort order can be set for
ascending or descending order.
Usage: ARJSORT archive [/order] [/r]
Where /order is one of the following:
/a = attribute /o = ratio
/c = crc /p = pathname
/d = date/time /s = size
/e = extension /t = time
/f = filename
[/r]everse, if specified, must be the last option.
ARJSORT has been designed to work at MS-DOS 3.3 and up. The @ECHO
command in ARJSORT.BAT may cause problems with other versions of DOS.
ARJSORT uses the special ARJSORT.$$$ feature of the order command. A
list file named ARJSORT.$$$ is expected to be in a special format by
the order command. That format is produced by the ARJ v -jv1 command.
ARJSORT requires the MS-DOS SORT program to be available for ARJSORT to
work. ARJSORT creates several temporary files named ARJSORT.$$?.
These temporary files will be deleted at the end of the program.
ARJSORT Examples:
ARJSORT archive - Sort files in ascending alphabetical pathname
order.
ARJSORT archive /r - Sort files in descending pathname order.
ARJSORT archive /d - Sort files in chronological date-time modified
order.
ARJSORT archive /d /r - Sort files in descending chronological
date-time modified order.
ARJSORT archive /s - Sort files in ascending file size order.
At ARJ release 1.10, ARJSORT.COM (compiled version of ARJSORT.BAT) is
included with the ARJ software. This program can be used in place of
the ARJSORT.BAT. This COM version is better for use in DOS BATCH files
than ARJSORT.BAT.
HISTORY:
1.21 - Fixed deletion of temporary files.
1.20 - Improved ARJSORT.$$$ processing so that EDLIN is not needed.
1.10 - Added ARJSORT.COM.
end of document
LICENSE.DOC
ARJ LICENSE POLICY May 1991
------------------
The ARJ archiver, the REARJ program, the ARJSFX module, the ARJSFXJR
module, and its documentation are copyright (c) 1990,91 Robert K Jung,
all rights reserved. The ARJ programs may not be circulated in any
incomplete or modified form, nor sold for profit, without written
permission of the author.
The ARJ archiver contains proprietary processes for which patent
rights are being sought by the author. Please note that ARJ
compatible archivers can be built without infringing on any ARJ
2.10 proprietary processes. ARJ 1.10 is such a compatible
archiver.
If you distribute this software to others, you are required to
distribute the ENTIRE package consisting of the following files:
UNARJ.ARJ - UNARJ C source, UNARJ.EXE and documentation
ARJ.EXE
ARJ.DOC
ARJ_BBS.DOC
ARJSORT.BAT
ARJSORT.COM
ARJSORT.DOC
LICENSE.DOC
ORDERFRM.DOC
README.DOC
REARJ.CFG
REARJ.DOC
REARJ.EXE
REGISTER.EXE
TECHNOTE.DOC
UPDATE.DOC
WHATSNEW.DOC
WHY_ARJ.DOC
I strongly prefer that the files be distributed in the format
originally released: ARJ210.EXE with the ARJ-SECURITY envelope as
created by the author. If you must distribute the archive in ZIP
format, please archive the ARJ210.EXE as one file inside the ZIP
archive.
You may not distribute the registered versions of ARJ, ARJR, and DEARJ
except as noted in your ARJ license agreement. ARJR is the ARJ
program minus the help screens and SFX/SFXJR modules. DEARJ is the
ARJR program minus the archive modification/creation functions. ARJR
and DEARJ are available only to ARJ LICENSEES. See the ORDERFRM.DOC
for ordering information. Those who have made donations to ARJ may
upgrade to a SITE LICENSE with full credit for your previous donation.
Please note that on your order.
The use and/or sale of ARJ, ARJR, DEARJ, REARJ, UNARJ, ARJSFX, and
ARJSFXJR (ARJ package) is subject to the following terms:
PERSONAL USE:
For personal non-commercial use, ARJ, ARJSFX, and ARJSFXJR may be
freely used and shared with others. There is no REQUIRED registration
fee for non-commercial/non-institutional personal use.
For personal non-commercial use, the program REARJ may be freely used
only by ARJ users. An ARJ user is one who uses ARJ on a regular
basis. Others who wish to use REARJ must purchase a site license for
the ARJ package.
However, if you find the ARJ package of value, a gift of ten dollars
or any amount would be greatly appreciated. Please remember that
improvements to the ARJ package cannot happen without your support.
At least help by sharing ARJ with others.
BULLETIN BOARD SYSTEM (BBS) USE:
ARJ and REARJ may be freely used on non-commercial computer bulletin
board systems where ARJ is one of the supported primary archive
formats. The use of ARJ and/or REARJ on a BBS where ARJ is not one of
the supported primary archive formats requires a site license.
INSTITUTIONAL/COMMERCIAL SITE LICENSE:
The UNARJ.EXE program may be used freely without a license.
Any corporation, institution, government agency or business wishing to
use the ARJ software in the course of its internal business must
purchase a SITE LICENSE. A sample SITE LICENSE for the internal use
of the ARJ software is included at the end of this document. Please
see the ORDERFRM.DOC or write for terms.
Any corporation, institution, government agency or business may use
the unregistered shareware version of ARJ only for evaluation purposes
and only for a thirty day period. After the thirty day period, you
must either register ARJ or discontinue its use. If you register ARJ,
you may continue to use the unregistered ARJ program until you receive
the registered version.
For the purposes of this license, a SITE is considered a group of
computers provided technical support from one location.
Examples of institutional or commercial use of ARJ:
1) Using ARJ to backup your business programs and/or data.
2) Using ARJ to create archives for storing or transporting data.
3) Using ARJ on a company supplied home computer for company
business.
4) Using ARJ to backup your research programs and/or data.
5) Using ARJ on your home business computer for business purposes.
The above examples should NOT be construed as the ONLY types of
institutional or commercial use of ARJ.
DISTRIBUTION LICENSE:
Standard file archives (*.ARJ) created by ARJ may be distributed
without a license. The UNARJ.EXE program may be freely used and
distributed without a license.
Any corporation, institution, government agency or business wishing to
include DEARJ, ARJSFX or ARJSFXJR as an integral part of a software
and/or hardware package to be distributed externally for the purpose
of saving diskette space must purchase a DISTRIBUTION LICENSE.
Please write for terms providing details of expected distribution
numbers per year, required diskettes before and after compression, a
description of the software/hardware and the specific ARJ software to
be used in the distribution.
If you wish to use the archiver ARJ or the conversion program REARJ in
your application software, the pricing is similar to the INTERNAL SITE
LICENSE price schedule. Please write for terms.
RELIGIOUS ORGANIZATIONAL USE:
To obtain the donation of a SITE LICENSE and/or DISTRIBUTION LICENSE,
please write providing details of your organization's religious and
charitable activities and the intended use for ARJ. A free license
will be provided to qualifying organizations. Qualifications will be
determined on a purely subjective basis. Non-qualifying organizations
can always obtain licenses by purchase.
COMMERCIAL SALE:
Any software dealer or library may distribute the entire ARJ package
without ARJR and DEARJ in an unmodified form for a fee as long as the
price charged for the disk containing ARJ does not exceed US $10.00.
With this single exception, the sale of ARJ or its parts for profit,
either alone or together with other software or hardware, requires a
licensing agreement providing for royalty payments. Please write for
terms.
UNARJ SOURCE CODE:
You may freely use the UNARJ C source code provided the end product is
NOT a file archiver. This source code is intended to promote the
building of utilities to support the use of ARJ and ARJ archives.
The UNARJ.EXE program is built from this source using Turbo C++ 1.0.
UNARJ.EXE may be freely used and freely distributed.
CUSTOM VERSIONS OF ARJ:
Customized versions of ARJ can be licensed. Please write for terms
describing your requirements. Customized versions will take several
weeks or more to build.
ARJ SOURCE CODE:
The ANSI C source code for ARJ may be obtained under a license
arrangement with a non-disclosure policy. I am currently limiting
source licenses to large firms.
Please write for terms.
ARJ-SECURITY ENVELOPE USE:
This feature is intended for but not limited to software developers
who wish to distribute archived software with some assurance that the
archived software in a validated ARJ-SECURED archive will be secure.
I reserve the right to limit the distribution of ARJ-SECURITY serial
numbers.
This feature may ONLY be used by those who have purchased an
ARJ-SECURITY serial number.
Please see the ORDERFRM.DOC or write for terms.
DISCLAIMER:
This software (ARJ, ARJR, DEARJ, REARJ, ARJSFX, ARJSFXJR,
ARJ-SECURITY, and UNARJ) is provided on an "as is" basis without
warranty of any kind, expressed or implied, including but not limited
to the implied warranties of merchantability and fitness for a
particular purpose. The person using the software bears all risk as to
the quality and performance of the software. Should the software
prove defective, the user assumes the entire cost of all necessary
repair, servicing, or correction. The author will not be liable for
any special, incidental, consequential, indirect or similar damages
due to loss of data or any other reason, even if the author or an
agent of the author has been advised of the possibility of such
damages. In no event shall the author's liability for any damages
ever exceed the price paid for the license to use the software,
regardless of the form of the claim.
SAMPLE SITE LICENSE
-------------------
LICENSOR:
ROBERT K JUNG
2606 VILLAGE ROAD WEST
NORWOOD, MASSACHUSETTS 02062
USA
Robert K Jung herein referred to as the LICENSOR hereby grants
[ORGANIZATION NAME] ----------------------- a site license for
[NUMBER OF COMPUTERS LICENSED] computers for the use of the following
software programs: ARJ, ARJR, DEARJ, REARJ, ARJSFX, ARJSFXJR.
This is a perpetual license for the use of the software within your
organization, and is not transferable. This license allows internal
use and copying of the software by as many users/computers as
contracted for. Distribution, repackaging, or reselling of the
software to third parties is not allowed under this agreement.
The LICENSOR warrants that it is sole owner of the software and has
full power and authority to grant this license herein without consent
of any other party.
The LICENSOR hereby disclaims all warranties relating to this
software, whether expressed or implied, including without
limitation any implied warranties of merchantability or fitness for
a particular purpose. The person using the software bears all risk
as to the quality and performance of the software. Should the
software prove defective, the user assumes the entire cost of all
necessary repair, servicing, or correction. The LICENSOR will not
be liable for any special, incidental, consequential, indirect or
similar damages due to loss of data or any other reason, even if
the LICENSOR or an agent of the LICENSOR has been advised of the
possibility of such damages. In no event shall the LICENSOR's
liability for any damages ever exceed the price paid for the
license to use the software, regardless of the form of the claim.
This agreement shall be construed and enforced in accordance with the
laws of the STATE OF MASSACHUSETTS. Any action or proceeding brought
by either party against the other arising out of or related to this
agreement shall be brought only in a STATE or FEDERAL COURT of
competent jurisdiction located in MASSACHUSETTS. The parties hereby
consent to in personam jurisdiction of said courts.
COMPANY: [ORGANIZATION NAME]
ADDRESS: [ORGANIZATION ADDRESS]
CITY: [ORGANIZATION'S CITY] STATE: XX ZIP CODE: 00000
COUNTRY: [ORGANIZATION'S COUNTRY]
AUTHORIZED SIGNATURE: ______________________________________
TITLE: ______________________________ DATE: _______________
Robert K Jung SIGNATURE: ________________________________
LICENSOR DATE: ________________________________
ORDERFRM.DOC
ARJ ORDER FORM (rev 3): Prices subject to change without notice.
TO: Date: ____________________
Robert K Jung
2606 Village Road West
Norwood, Massachusetts 02062
USA
FROM:
Name: _______________________________________________
[Company]: _______________________________________________
[Title]: _______________________________________________
Address: _______________________________________________
City: _______________________________________________
State: ______________________ Zip Code: ______________
Country: ______________________ Phone: _________________
========================================================================
INTERNAL SITE LICENSE for the use of ARJ, REARJ, ARJSFX, and ARJSFXJR
for MS-DOS: (Choose ONLY ONE of the following ARJ price schedules)
1 computer at $30.00 30 ______
or 2 to 10 computers ... at $25 each, nbr computers ___x 25 ______
or 11 to 50 computers ... at $20 each, nbr computers ___x 20 ______
or 51 to 100 computers ... at $16 each, nbr computers ___x 16 ______
or 101 to 200 computers ... at $12 each, nbr computers ___x 12 ______
or 201 or more computers .. at $2000 total fee ______
========================================================================
ARJ-SECURITY ENVELOPE serial number(s) at $50 each, ___x 50 ______
List the exact name(s) that you want displayed by ARJ.
The display will look like the following line:
ARJ archive created by (this is where your name is placed)
____________________________________________________________
(Exact name, 60 characters max, add more sheets if necessary)
========================================================================
SITE LICENSEES receive the ARJR and DEARJ program in additional to the
normal ARJ software when ordering software diskettes.
Current software & documentation diskette(s) at $5 each ___x 5 ______
Next ARJ release software & docs diskette(s) at $5 each ___x 5 ______
Diskette format (choose one) 5.25" disk ____ 3.5" disk ____
========================================================================
TOTAL PRODUCTS ______
Massachusetts residents add 5% sales tax. ______
Please add $5.00 for shipping & handling for this order _5.00_
Please add an additional $5.00 for overseas orders 5 ______
TOTAL ORDER ______
Surcharge for non-U.S.A funds (TEN % of subtotal, $10 minimum) ______
TOTAL ENCLOSED (Be sure S & H is included) ______
========================================================================
NOTE:
No software & documentation diskettes are shipped unless purchased.
TERMS:
Check, US POSTAL Money Order or Money Order drawn on a U.S.A. bank in
U.S. funds. Corporate purchase orders (net 30) accepted from FORTUNE
500 corporations within the USA & Canada. All orders outside of the
United States & Canada must be prepaid. Personal checks require two
weeks to clear. Please allow a few weeks for delivery.
If necessary, checks drawn on a non-U.S.A. bank in non-U.S.A funds
will be accepted. Please add a TEN percent surcharge with a $10
minimum surcharge to cover currency exchange costs. Please allow
several weeks for the check to clear and for delivery.
README.DOC
README.DOC May 1991
This archive contains ARJ version 2.10. This is a full featured
shareware release. ARJ is free for non-commercial personal use.
MAJOR FEATURES OF ARJ INCLUDE:
ARJ 2.10 now ranks as the best in overall compression in terms of
resulting archive size.
Option to create multiple volume archives with one command making ARJ
useful for making backups to multiple floppies or archiving a very large
file to several floppies without "SLICE"ing.
A separate conversion utility called REARJ to facilitate wholesale
conversion of archives to the ARJ format.
Option to store empty directories.
Multiple string searching and context display within archives.
Archive security envelope to resist tampering.
A myriad of commands and options to provide outstanding flexibility in
archiver usage.
THIS ARCHIVE CONTAINS THE FOLLOWING FILES:
ARJ210.EXE - An ARJ-SECURED self-extracting archive containing the
following files:
UNARJ.ARJ - UNARJ C source, UNARJ.EXE and documentation
ARJ.DOC - ARJ user manual
ARJ.EXE - Version 2.10
ARJ_BBS.DOC - List of ARJ support BBSes.
ARJSORT.BAT - Sort archive by various parameters
ARJSORT.COM - Compiled ARJSORT.BAT file
ARJSORT.DOC - ARJSORT user manual
LICENSE.DOC - License policy
ORDERFRM.DOC - Order form for ARJ
README.DOC - This file
REARJ.CFG - Default REARJ configuration file
REARJ.DOC - REARJ user manual
REARJ.EXE - Archive conversion utility
REGISTER.EXE - Program to register ARJ
TECHNOTE.DOC - Technical information about ARJ
UPDATE.DOC - Update to ARJ user manual
WHATSNEW.DOC - Changes to ARJ from 1.00 to now
WHY_ARJ.DOC - ARJ commercial
To verify the ARJ-SECURITY envelope and contents of ARJ210.EXE, type:
ARJ210 -t
To extract the files in ARJ210.EXE, type:
ARJ210
This will extract the files in ARJ210.EXE to the current directory.
To extract the files in ARJ210.EXE using ARJ.EXE:
ARJ e ARJ210.EXE
For users with unusual DOS systems (not 2.11, 3.2, 3.3, 4.0), you may
have to rename ARJ210.EXE to ARJSFX.EXE to do the extraction.
end of readme.doc
REARJ.DOC
User's Manual for the REARJ archive conversion program, May 1991
REARJ software and manual copyright (c) 1991 by Robert K Jung.
All rights reserved.
REARJ version 1.21 release
INTRODUCTION:
REARJ is an archive conversion program designed to facilitate the
conversion of LZH, ZIP, PAK, ARC, DWC, HYP, LZS, and ZOO archives to
the ARJ format. In addition, this converter has been designed to
convert to any of the aforementioned archive formats.
MAJOR FEATURES:
Supports all major archiver programs (PAK, LHARC, PKZIP, ZOO,
ARJ, PKPAK, DWC, HYPER, LARC, LHA).
Supports file attributes within archives.
Supports directories within archives.
Supports converting archives within archives (ZIPs in a ZIP).
Ensures reliable archive conversion with a file count and total
size check.
Supports the use of virus checkers.
Supports pathnames with drive letters.
Is command line driven.
Supports recursive scanning through subdirectories.
Optional logging of conversions.
Simulation option.
A WORD OF CAUTION:
If you plan to convert many archives at one time, it is STRONGLY
suggested that you make a backup of your hard disk. This is a wise
precaution to take anytime that you make major modifications to data
on your hard disk drive.
REARJ will not work properly for those archivers/archives that produce
absolute directory paths when extracting. In other words, REARJ
expects to find all extracted data in its created temporary directory.
I have discovered that LHA using the "x" command does not return an
error when encountering a DISK FULL situation. This will cause data
loss!!! You should scan the log file after a conversion to look for
any major archive size differences.
REARJ's default configuration does not support volume labels. You can
modify the ZIP and ARJ configurations by adding -$D where "D" is a
drive where the archivers can change/access the volume label. Please
note that this will only work correctly when every archive to be
converted has a volume label in it. Volumes that do not have volume
labels will be converted into one with a volume label!!!
The archiver executables must be located in the DOS PATH directories.
This is due to REARJ creating and using a temporary directory.
If you have changed the MS-DOS switch character from "/" to another
character via an undocumented MS-DOS interrupt or the TurboC
setswitchar() function, REARJ may not work properly with the default
REARJ.CFG configuration file.
The most thorough testing was done with ARJ as the target format and
ZIP as the original format. In any case, you should verify that the
extract commands of your favorite archive formats in the configuration
file are correct. The extract commands are the most important to get
right because REARJ has a built-in verification procedure to ensure
that the ADD commands executed properly.
Be sure you have enough disk space on your working directory to
extract the largest archive that you want to convert!!!
The versions of archivers tested:
ARJ 1.00, 1.10, 2.00, 2.10
LHA 2.12
PAK 2.51
PKZIP 1.10
PKPAK 3.61
ZOO 2.01
DWC A5.01
LARC 3.33
HYPER 2.5
INSTALLATION:
Copy REARJ.EXE and REARJ.CFG to one of the PATH directories. They do
not have to be placed in the same directory. The PATH directories are
usually set by the PATH command in your AUTOEXEC.BAT file.
Be sure the archivers are installed in a PATH directory.
OPERATION OF REARJ:
REARJ will build a temporary directory in the current directory and
extract the archive(s) to this directory. REARJ will then build the
target archive(s) with the files in this directory. If the target
archiver does not support reading of hidden or system files, REARJ
will reset those bits and then re-archive the files without those
attributes. If the original archive has directories in it, REARJ will
extract it with full paths and re-archive it with full paths if the
target archiver supports directories. In this case, if the archiver
does not support directories, REARJ will skip converting this archive.
If the "/a" option has been selected, REARJ will execute REARJ to
convert any internal archives of the same type to the target format.
Any "/s" option will be carried over to the recursive REARJ command.
As an extra test, REARJ will count the files extracted from the
original archive and total their sizes. Then REARJ will extract the
new archive and count the files and total the sizes. If the count and
size do not match, REARJ will skip converting the archive.
REARJ assumes that the supported archivers will pass a non-zero error
code when there is an operation failure.
COMMAND SYNTAX:
REARJ [switch options] filespec(s) or wildspec(s)
You can specify one or more filespecs on the command line. These
filespecs can have paths and wildcards. Up to 100 filespecs can be
accepted by REARJ. If you specify *.* as a wildspec, REARJ will look
at all filenames, but will skip those filenames not ending in standard
archive suffixes. If you specify the /r switch, REARJ will look for
filenames matching the filespec(s) in the current directory and all
subdirectories of the current directory.
If you want to use a RAMDRIVE as the temporary directory, you must
make the RAMDRIVE the current drive and directory and execute REARJ
commands from there.
The switch options and filespecs can be entered in any order. REARJ
uses the default MS-DOS switch character "/". REARJ uses the Turbo
C++ function getswitchar() to determine the MS-DOS switch character.
If the switch character is "-", REARJ will translate any UNIX style
pathnames to MS-DOS syntax ("dir/file" to "dir\file").
SWITCH OPTIONS:
/a - convert archives within archives
This option causes REARJ to recursively execute REARJ to convert
any archives of the original type found within the original
archive (ex. ZIPs within a ZIP). This option requires additional
memory to execute successfully.
NOTE!!! When using this option, REARJ.EXE and REARJ.CFG must be
installed in a DOS PATH directory because the recursive REARJ
will be executed within a temporary directory and NOT in the
original directory.
/d - delete the original archive
This option causes REARJ to delete the original archive after a
successful conversion to the target format. This option will NOT
delete read-only archives.
/e - do not return error if no archives were found
This option is used by the internal recursive REARJ. This option
will cause REARJ to return a zero exit code if no matching
archives were found. Usually, REARJ returns a non-zero exit
code for this condition.
/i - check program integrity
This option causes REARJ to validate the REARJ program on disk.
If you are using a pre-3.0 MS-DOS revision, you will have to
specify the full program name as in "REARJ /i\util\rearj.exe".
/l - write conversion data to log file
This option causes REARJ to open a log file and record each
successful conversion in the log file. The default log file name
is REARJ.LOG. You can specify the log file name as in
"REARJ /lfilename *.ZIP". If the log file already exists, REARJ
will append logging data to it.
/o - overwrite existing target archive
This switch is used to delete already existing target archives.
This is not used for updating archives. Use the /u option for
updating an archive.
/q - query for each archive to convert
This switch causes REARJ to pause and prompt the user for
permission to convert individual archives. Note that REARJ will
not prompt when skipping archives.
/r - recurse through subdirectories
This switch causes REARJ to look for archives in all included
subdirectories as well as in the current directory. This switch
allows the user to convert all archives on a hard disk with one
command.
/s - skip verify of file count and total size
Skip the overhead of the file count and total size verification
process. This verification costs an extra extraction, but this
check is worth the time, especially when converting a large
number of archives.
/t - specify the target archive type
The default target archive format is normally ARJ. This can be
changed by building an external REARJ.CFG file. The first
archive type is always the default format. To override the
default format, the user can specify the /t switch as in
"REARJ *.ZIP /tlzh". The previous example has specified that LZH
is the target format.
/u - allow update of archive with backup
This switch is used to re-archive an archive, possibly to take
advantage of improved compression. The original archive is
backed up by renaming it with the backup suffix which by default
is "BAK". You may specify another backup suffix with the /u
option as in "REARJ *.ARJ /uar$" where the backup suffix is
"ar$". Since this option creates a brand new archive, archive
comments will be lost. Do NOT specify a "." in the suffix.
/v - execute configured command on extracted files
This switch is used to execute a configure command on the files
extracted from the original archive. The intent is to allow
virus scanning of the archive contents. The command must be
specified in the REARJ.CFG file.
The command may be placed in the REARJ.CFG file by inserting one
line ahead of the archive commands. The line must start with the
word "VIRUS" followed by a blank and the external command.
Example: VIRUS scan /nomem *.*
If the invoked command returns a non-zero error code, REARJ will
skip the conversion of that archive and log the error as code 13.
REARJ *.* /v
/x - exclude filenames or wildnames from the conversion process
You can exclude one or more files from the conversion process.
The filenames can contain wildcards.
REARJ *.ZIP /xONE.ZIP /xTWO.ZIP
/z - simulate conversion process
This switch causes REARJ to simulate the conversion process. No
archives will be extracted, built, or deleted.
EXAMPLES:
REARJ *.ZIP this converts all ZIP files in the current
directory to ARJ files.
REARJ *.ZIP *.ARC this converts ZIP and ARC files to ARJ
files.
REARJ SOFT.ZIP this converts only SOFT.ZIP to SOFT.ARJ.
REARJ *.ZIP /d /l this converts ZIP files with logging and
deletion of each original archive upon
successful conversion.
REARJ *.ARC /r this converts all ARC files in the current
directory and in subdirectories of the
current directory to ARJ files.
REARJ SOFT.ARJ /tZIP this converts SOFT.ARJ to SOFT.ZIP.
REARJ *.ARJ /u re-archive all ARJ archives.
REARJ *.* /v re-archive all archives and execute
configured command on extracted files
EXTERNAL CONFIGURATION FILE
REARJ comes with a configuration file, REARJ.CFG, which supports
conversion between the ARJ, ARC, LZH, PAK, ZIP, DWC, LZS, HYP, and ZOO
formats. The commands PKPAK and PKUNPAK are used for ARC files. The
command LHA is used for LZH files. You can change these defaults by
editing the configuration file.
The format of the configuration file is fairly simple.
The first line can optionally specify an external command to be
executed by REARJ when the "/v" option is selected. This line must
start with the word "VIRUS" minus the quotes, followed by a space,
followed by the external command.
Example: VIRUS SCAN /nomem *.*
If you do not want to configure this item, DO NOT insert a blank line.
Each archive format requires four lines in the file.
The first line is the format suffix.
The second line is the archive ADD command with a %s in the place of
the archive name. Any other percent signs in the command must be
preceded by "\" as in "\%". The ADD command should support directory
inclusion and reading of hidden and/or system files. REARJ will parse
this command line using the space character as the token separator.
If your ADD command requires DOS piping as the ZOO archiver requires,
you must precede the ADD command with the text "COMMAND /C ".
Example: ARJ a -a -r -jt %s
COMMAND /C STUFF *.* | ZOO aI %s
The third line is the archive EXTRACT command with a %s in the
place of the archive name. Any other percent signs in the command
must be preceded by "\" as in "\%". The EXTRACT command should
support directory recreation if the archive contains directories.
The extraction of directories must be to child directories within the
current directory. REARJ will parse this command line using the space
character as the token separator.
If your EXTRACT command requires DOS piping, you must precede the
EXTRACT command with the text "COMMAND /C ". Beware that command exit
codes are not passed back to REARJ when using COMMAND /C.
The fourth line contains the letters "A" and/or "D" or no letters.
The "A" stands for the ability to process files with the hidden and/or
system attribute. The "D" stands for full support of directory trees
within archives. No letters (blank line) stands for no support for
hidden or system files or for archive containing directories.
There must be NO EXTRA blank lines or comments in the file. You may
use leading blanks for clarity.
The first format type declared in the configuration file is used by
REARJ as its default target format. REARJ.CFG is currently setup
with ARJ as its default target format.
The following is the current REARJ.CFG configuration:
VIRUS scan /nomem *.*
ARJ
ARJ a -a+ -r+ -y+ -jt+ %s
ARJ x -y+ %s
AD
ZIP
PKZIP -a -r -p -wHS %s
PKUNZIP -d %s
AD
ARC
PKPAK -a %s
PKUNPAK %s
LZH
LHA a /a+ /r+ /x+ %s
LHA x /a+ %s
AD
PAK
PAK a /i %s
PAK e /path %s
AD
ZOO
COMMAND /C STUFF *.* | ZOO aI %s
ZOO x.// %s *
D
HYP
HYPER -a -r -p %s
HYPER -x -p %s .
AD
DWC
DWC a %s *.*
DWC e %s
LZS
LARC a /r %s *.*
LARC e /x %s *.*
D
If you use a different archiver program, you will need to either
rename the program to one of the supported ones or you will need to
modify the installed REARJ.CFG file.
DWC does not allow duplicate filenames even within a directory
structure, so "D" is not set for DWC.
LARC may or may not work correctly for archives with directories. I
was unable to stop LARC from querying on making directories.
If your original archive format supports extraction to absolute
directory paths as opposed to relative directory paths and you have
such archives containing absolute paths, you should not put directory
extraction in the REARJ.CFG file.
LOG FILE DATA
When logging is enabled, REARJ will log the action on each selected
file. For successful conversions, REARJ logs the date-time, target
archive type, original archive size, new archive size, bytes saved,
and original archive name.
When selected files are skipped for any reason, REARJ will log an
entry in the log file (when logging is enabled) which specifies the
reason code for skipping the file. The following are the codes:
1 = File not found
2 = File is not a configured archive type
3 = Target archive already exists
4 = Not enough disk space (currently unimplemented)
5 = User skipped or user did not select update option
6 = UNPACK error
7 = PACK error
8 = Target cannot support directories
9 = Wrong file count
10 = Wrong total size
11 = Internal archive REARJ error
12 = Rename archive error
13 = Invoked /v command error (found a virus?)
LICENSE POLICY:
REARJ has an unusual license policy.
Please refer to the LICENSE.DOC for license information.
TECHNICAL SUPPORT:
Please report any bugs. I will TRY to fix them.
I can be reached at:
Robert Jung at Wonderland BBS (508) 663-6220
Robert Jung at Dimensional Crossroads BBS (508) 427-5379
Robert Jung at Bay State BBS (617) 598-6646
Robert Jung at FIDONET address: 1:16/390.7
Robert Jung in the COMPRESS (ILINK), LHARC / COMPRESSIONS
(SMARTNET), SHARE (RIME) or ARCHIVERS (RELAYNET) echo conferences.
2606 Village Road West
Norwood, Massachusetts 02062
USA
Internet address: robjung@world.std.com (Checked daily)
Compuserve users can enter >INTERNET: robjung@world.std.com
at the "Send to" prompt. I prefer CompuServe users to send mail
to this address as opposed to my CompuServe userid below.
CompuServe userid: 72077,445 (Checked infrequently)
HISTORY:
1.21 - Added error message when executables are not in DOS PATH.
Added further tests to rename function to avoid bugs in Windows.
Added /v option to support virus scanning.
Allowed more heap space in link of REARJ.
1.20 - Fixed path processing with drive letters. Fixed alternate drive
processing. Removed disk space checking.
Fixed REARJ.CFG for LZH and HYP archives.
Added /u option. Changed /o option.
end document
TECHNOTE.DOC
ARJ TECHNICAL INFORMATION May 1991
** IMPORTANT NEWS ****************************************************
There is an extended header bug in older versions of ARJ, AV.C and
UNARJ.C. The extended header processing in read_header() should
skip 4 bytes for the extended header CRC and not 2. This is NOT a
current problem as no versions of ARJ use the extended header.
**********************************************************************
Modification history:
Date Description of modification:
-------- ------------------------------------------------------
05/19/91 Improved the description of extended header processing.
05/11/91 Simplified this document. Added volume label type.
03/11/91 Added directory file type.
02/23/91 Added more comments.
01/10/91 Corrected timestamp description and header order of file mode.
10/30/90 Corrected values of flags in ARJ flags.
ARJ archives contains two types of header blocks:
Archive main header - This is located at the head of the archive
Local file header - This is located before each archived file
Structure of archive block (low order byte first):
Bytes Description
----- -------------------------------------------------------------------
2 header id (main and local file) = 0xEA60 or 60000U
2 basic header size (from 'first_hdr_size' thru 'comment' below)
= first_hdr_size + strlen(filename) + 1 + strlen(comment) + 1
= 0 if end of archive
1 first_hdr_size (size up to and including 'extra data')
1 archiver version number
1 minimum archiver version to extract
1 host OS (0 = MSDOS, 1 = PRIMOS, 2 = UNIX, 3 = AMIGA, 4 = MACDOS)
1 arj flags (0x01 = GARBLED_FLAG) indicates passworded file
(0x02 = RESERVED)
(0x04 = VOLUME_FLAG) indicates continued file to next
volume
(0x08 = EXTFILE_FLAG) indicates file starting position
field
(0x10 = PATHSYM_FLAG) indicates path translated
("\" changed to "/")
1 method (0 = stored, 1 = compressed most ... 4 compressed fastest)
1 file type (0 = binary, 1 = 7-bit text, 2 = comment header)
(3 = directory, 4 = volume label)
1 reserved
4 date time modified
4 compressed size
4 original size (this will be different for text mode compression)
4 original file's CRC
2 filespec position in filename
2 file access mode
2 host data (currently not used)
? extra data
4 bytes for extended file starting position when used
(this is present when EXTFILE_FLAG is set)
? filename (null-terminated string)
? comment (null-terminated string)
4 basic header CRC
2 1st extended header size (0 if none)
? 1st extended header (currently not used)
4 1st extended header's CRC (not present when 0 extended header size)
...
? compressed file
Time stamp format:
31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
|<---- year-1980 --->|<- month ->|<--- day ---->|
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
|<--- hour --->|<---- minute --->|<- second/2 ->|
Compression methods:
ARJ methods 1 to 3 use Lempel-Ziv 77 sliding window with static Huffman
encoding.
ARJ method 4 uses Lempel-Ziv 77 sliding window with pointer/length
unary encoding.
There is one decoder for methods 1 to 3 and one decoder for method 4.
Encryption technology:
ARJ does NOT use DES encryption algorithms. It uses a combination of
simple exclusive-or operations.
end of document
UPDATE.DOC
UPDATE.DOC, ARJ 2.10 May 1991
This documents new or updated information since ARJ 2.00.
** IMPORTANT NEWS ****************************************************
ARJ utility developers should refer to UNARJ.DOC in UNARJ.ARJ
concerning a bug in extended header processing in UNARJ.C and an
ambiguous statement in DECODE.C.
ARJ and UNARJ versions prior to ARJ 2.10 will NOT properly handle
ARJ archives with extended headers. Please note that NO current
version of ARJ creates archives with extended headers.
ARJ is now released as a non-commercial use version. Commercial
users MUST purchase a site license to get a registered version of
ARJ. Commercial users may use the unregistered version of ARJ for
evaluation purposes for a period of 30 days. Current SITE
LICENSED ARJ users will automatically receive a free registration
kit. Please allow a few weeks for delivery.
The ARJ SFX (-je) and SFXJR (-je1) modules have been modified
because of an undesirable interaction with TSR DIET 1.02b. TSR DIET
truncates ARJ SFX and SFXJR modules. You SHOULD REDO any ARJ SFX
type archives with ARJ 2.10!!! Here is a fast way to do it without
recompressing:
ARJ j newsfx oldsfx.exe -je OR ARJ j newsfxjr oldsfxjr.exe -je1
The ARJ SFX (-je) module has been changed so that the default
command is "-x" extract files with pathnames.
If the first filename after the archive name specifies a directory,
ARJ will treat it as the base directory whether or not the filename
has an appended "\". This has an impact upon the "-p1" option.
You can avoid a problem with the "-p1" option by specifying the
path to extract with an appended "*.*" or "\*.*".
The matching of selected filenames has been changed to cause fewer
user problems when modifying an existing archive. When updating an
existing archive, the ARJ modified pathname of the selected input
file MUST MATCH EXACTLY the pathname of the file in the archive. An
ARJ modified pathname is the resulting pathname that ARJ actually
stores in an archive.
The temporary "-jg" option to extract certain encrypted files
archived with the "-g" garble option with older test versions of ARJ
(0.15 and earlier) has been removed.
The ARJ m -f and ARJ m -u commands delete added files and files that
are already update to date in the archive. This also applies to
archives bits and the "-b2" option.
**********************************************************************
COMMON PROBLEMS USING ARJ
DO NOT use the "-t1" option with binary files!!!
ARJ by default stores the pathname specified by the user and not just
the filespec as is the manner of other archivers such as LHARC. You
can exclude the path portion of the filename by specifying the "-e"
option as in "ARJ a -e archive temp\*.*". You can also remove the
path information from an already built archive with the command
"ARJ r archive".
The "f"reshen command in ARJ works slightly differently from the
"f"reshen command in LHARC. If the ARJ archive was created using the
"-r" option, the ARJ freshen command requires the "-r" option.
ARJR and DEARJ programs
The new programs ARJR and DEARJ are available only to registered
users of ARJ. ARJR is the ARJ program minus the help screen and
SFX modules. DEARJ is the ARJR program minus the archive
creation/modification functions. See the LICENSE.DOC and
ORDERFRM.DOC for more information.
REARJ archive convertor
REARJ has been revised to allow a virus checking program to be
executed during each archive conversion. See REARJ.DOC for more
information.
UNARJ Portable C source code
A couple of potentially SERIOUS bugs have been fixed. See the
UNARJ.DOC for more information.
Now included is the C source code for a simple UNARJ extractor
program. It has been portabilized courtesy of Mark Adler for
platforms that do not support ANSI C. This new version of UNARJ
replaces the old AV program by supporting the "e", "l", "t", and "x"
commands. However, this UNARJ is NOT meant to be a production
quality ARJ extractor. It is meant for the use of 3rd party
developers who want to build file readers, etc., for ARJ.
See UNARJ.DOC in UNARJ.ARJ for more information.
ARJ COMMAND LINE
ARJ a archive base_directory
The base_directory no longer requires an appended "\". ARJ will
interpret the first filename after the archive name as a directory
if it exists as a directory.
ARJ COMMANDS
"m" command and "-f or -u" option
The ARJ m -f and ARJ m -u commands now purge all selected files
duplicated in the archive including ones that did not need to be
updated because they were already up to date.
"w" command
The "w" command will prompt for two additional queries before
requesting the search strings. The first query is whether to ignore
case when searching. The second query asks whether to display the
matched string in context. This command uses the "-jv" option to
display more lines of context text.
-jv = 6 lines, -jv1 = 12 lines, -jv2 = 18 lines, -jv3 = 24 lines
ARJ SWITCHES
"-?" switch
This option displays more detailed help screen. You may suppress the
screen pauses by specifying "ARJ -? -jp" or by redirecting the output to
a file as in "ARJ -? > filename".
"-$" switch
This option allows the user to store or extract DOS volume labels in
ARJ archives. You can only add or extract volume labels
at DOS 2.0 and above. The "-$" option may be specified with or
without a drive specification. The drive can be specified by
appending the letter and optionally the ":" to "-$". If none is
specified, ARJ assumes the current drive unless a specified target
base directory ha a drive specification.
Only standard DOS labels are supported by ARJ.
Syntax: ARJ a archive -$ add all files and the label of
the current drive.
ARJ a archive ... -$B add only the label of drive B
ARJ a archive ... -$B: add only the label of drive B
To extract volume labels, you must select the label by setting "-$"
and specifying a matching wildname/filename.
Syntax: ARJ e archive doslabel -$ extract the label named doslabel
to the current drive.
ARJ e archive -$D: extract all files to the current
drive and extract the label to
drive D:.
ARJ e archive label B:\ -$ extract all files to B:\ and the
label to drive B.
"-e1" switch
When using the "-e1" and "-p" options at the same time, ARJ will not
include the specified base directory in the pathname comparison.
"-i1" switch
This option provides a bar type graphical progress indicator for the
compression, extraction, and testing type commands of ARJ. This
provides an alternative to the simple numeric increasing percentage
progress indicator.
"-p" switch
This option is no longer needed when "f"reshening or "u"pdating
archives because that is now the default for these operations.
"-s2" switch
The "-s2" option has been added for users who want to use a "-s"
type switch in the ARJ_SW environment variable. The "-s" switch
has the side effect of always updating the date-time stamp even when
used in list or extract mode. The "-s2" switch is ignored during
non-modification commands.
"-t1" switch
ARJ will scan the first 4096 bytes of the input file looking for
8-bit non-text data. If ARJ finds any 8-bit data, it will
automatically backtrack and switch to "-t0" (default) binary mode for
that particular file. In addition at the end of compressing the
input file, if ARJ finds that the input file size is not greater than
75 percent of the binary file size (size on disk), ARJ will report an
error for that input file and increment the error count. This should
help avoid the problem of accidentally compressing executable files
with the "-t1" option which results in lost data.
"-jf1" switch
This switch option causes ARJ to only strip the drive spec and not
the root symbol from any pathnames.
"-jm1" switch
This switch option provides slightly less compression at greater
speed than "-jm".
"-jo" switch
The "-jo" switch is used to query the user when using the ARJ "a" or
"m" commands to add files to an archive. Before ARJ overwrites an
existing internal archive file when using "-jo", ARJ will query the
user with "Update <filename>? ". Without this option, ARJ will
overwrite the internal archive file without querying.
"-jy" switch
This switch is used to suppress individual ARJ user prompts.
Syntax: ARJ e archive -jy<flags>
where <flags> is one or more of the following characters:
a, c, d, k, n, o, s, v. ARJ will assume YES for each flag selected.
A - skip append query during a multi-volume extraction
C - skip create directory query
D - skip delete files query
K - skip disk space availability query
N - skip new filename prompt
O - skip overwriting existing file query
S - skip scanned enough text query
V - skip ok to proceed to next volume query
Example: ARJ x volume -v -jyaco
selected append, create, and overwrite "yes"es.
end document
WHATSNEW.DOC
WHATSNEW.DOC May 1991
This lists the user visible changes to ARJ from previous versions.
ARJ 2.10
** IMPORTANT NEWS ****************************************************
ARJ utility developers should refer to UNARJ.DOC in UNARJ.ARJ
concerning a bug in extended header processing in UNARJ.C and an
ambiguous source statement in DECODE.C.
The ARJ SFX (-je) and SFXJR (-je1) modules have been modified
because of an undesirable interaction with TSR DIET 1.02b. You
should redo any ARJ SFX type archives with ARJ 2.10. Here is a
fast way to do it without recompressing:
ARJ j newsfx oldsfx.exe -je
The default command for ARJ SFX modules (-je) has been changed to
"-x" extract files with pathnames.
If the first filename after the archive name specifies a directory,
ARJ will treat it as the base directory whether or not the filename
has an appended "\".
The matching of selected filenames has been changed to cause fewer
user problems when modifying an existing archive. When updating an
existing archive, the ARJ modified pathname of the selected input
file MUST MATCH EXACTLY the pathname of the file in the archive.
ARJ m -f archive and ARJ m -u now will purge all selected input
files that are added to or already duplicated in the archive.
The ARJ w command prompts for caseless search and context display.
**********************************************************************
The version and copyright message has been changed to indicate that the
unregistered version is not for commercial use. It can be used for
evaluation use for 30 days in a commercial environment.
Registered users can obtain the new ARJR and DEARJ programs.
ARJ.DOC has been updated and revised extensively.
Added directory type checking to command line processing.
Added caseless search and context display option to "w" command.
Added "-t1" checking for input file type.
Added "-$" volume label option.
Added "-i1" option to display bar graph progress indicators.
Added "-jf1" option to strip only the drive spec from a pathname.
Added "-jm1" option as a faster "-jm".
Added "-jo" option to query on updating when using "a" command.
Added "-jy" option to select types of user queries to skip.
Added "-s2" option to set date-time stamp only during modifications.
Added extra checks to rename functions to avoid Windows 3.0 bugs.
The UNARJ source package has been translated to Portable C and now
supports the "e", "l", "t", and "x" commands. UNARJ.EXE is included.
Improved appearance of progress indicators with extra spaces.
Changed default ARJSFX command to "-x".
Modified ARJ freshen and update functions to work like PKZIP and LHARC.
Modified file date-time stamping to work in OS/2 DOS emulation.
Modified "ARJ -? > filename" to not pause per screenful.
Modified ARJ l *.* to not abort on non-ARJ archives.
Added error messages for ! usage.
Added new error messages to REARJ.EXE.
Removed "-jg" switch.
Modified pathname matching in freshen and update commands.
Modified pathname matching to account for use of "-e1" option.
Modified wildcard matching to handle "???" according to DOS conventions.
Modified handling of the 0 file(s) warning during wildcarded scans of
archives.
Fixed password handling so that archives can have passworded and
unpassworded files in the same archive.
Fixed extender header processing in ARJ and UNARJ.
Fixed ambiguous statement in DECODE.C in UNARJ.
Fixed "-jd" option with ARJ l command.
Fixed problem with ARJ self-extractors when DIET 1.02 is memory resident.
Fixed problem with ARJ exiting early when processing archives with "-v".
Fixed first line display problem with ARJ "s" command.
Fixed errorlevel code processing for Bad Huffman code.
ARJ 2.00
Speeded up compression methods 1 and 2 over 100 percent to close to
PKZIP speed. Improved compression of methods 1 and 2.
Decreased memory usage of method 1 by almost 60,000 bytes.
Added full ANSI C source code for simple UNARJ extractor program.
Added extraction of archive header comments via "-z" option.
Added "-jm" option to set maximum compression mode.
Added "-jn" option to skip selected files up to named file.
Added "-ji" option to create a file containing the filenames archived.
Modified "x" command to require "-jf" for absolute extract.
Modified ARJ to handle merged ("j" command) multiple volume archives.
Modified options of REARJ to use "/o" to delete a target archive and
"/u" for updating an archive to the same format.
Fixed handling of ..\ type pathnames.
Fixed redundant delete error messages when using "m" with "-v".
Fixed REARJ.EXE for paths with drive letters.
Removed disk space checking in REARJ.EXE.
Fixed REARJ.CFG for LZH files.
ARJ 1.10
Provided archive conversion program, REARJ.
Speeded up extraction functions closer to LHA 2.10 speed.
Speeded up method 1 and 2 compression by 20 percent.
Added more frequent checking of CTL C.
Added new UPDATE.DOC to document new changes.
Added directory creation to ARJSFXJR module (-je1).
Added "i" command to verify ARJ program.
Added "j" command to join archives.
Added "-!" option to set list file character (!).
Added "-a1" option to add empty directories.
Added "-s1" option to keep original archive timestamp.
Added "-z" option to name the comment file on command line for header.
Added "-jz" option to name the comment file on command line for files.
Added errorlevel support.
Modified AV.C to handle directory entries.
Modified ARJ to recognize "..." filespec as a special case.
Modified "-x" to work for non-update commands and for subdirectories.
Modified "-v" usage during extraction to allow correcting the
insertion of the wrong diskette.
Improved temporary file usage with unique filenames.
Fixed improper "Can't reset archive bit" message.
Fixed "-p" handling in ARJSFX self-extract module.
Fixed "-p" handling with base dir and non-update commands.
Fixed display of years over 1999 in "l" and "v" commands.
Fixed "-o" and "-ob" options to interpret 80 as 1980.
Fixed handling of new lines in comments in ARJSFXJR.
ARJ 1.00
First production release.
end of WHATSNEW.DOC
WHY_ARJ.DOC
WHY_ARJ.DOC May 1991
This document describes the benefits of ARJ. Pardon the commercial.
Compression benchmark results are at the end of this document.
1) ARJ provides superior size compression to the other products
available on the PC. This includes PKZIP 1.10, LHArc 2.12, PAK
2.51, ARC 7.00 and HYPER 2.5. In a few particular cases, other
archivers may produce slightly smaller archives than ARJ. But in
most cases ARJ provides 1 to 20 percent better compression.
ARJ is particularly strong compressing databases, uncompressed
graphics files, and large documents. One user reported that in
compressing a 9.0 megabyte database, PKZIP produced a compressed
file of size 1.8 megabytes. ARJ produced a compressed file of
size 1.1 megabytes. Using the maximum compression option, ARJ
produced a compressed file of size 0.8 megabytes.
2) Of PKZIP, LHArc, PAK, ARC, ARJ, and HYPER, only ARJ provides the
capability of archiving files to multiple volume archives. In
other words, ARJ can archive files directly to diskettes no matter
how large or how numerous the input files are.
It is possible to archive a 10 megabyte file to several diskettes
and to recover the file directly from the diskettes. Other
archivers require that you compress the large file to hard disk
or large RAM drive and then slice the compressed file to fit on
diskettes. To recover the original file involves reassembling the
compressed file on the hard disk from the diskettes and then
extracting the original file from the reassembled compressed file.
This option is not even possible if you lack the hard disk space.
This feature makes ARJ especially suitable for distributing large
software packages without the concerns about fitting entire files
on one diskette. ARJ will automatically split files when
necessary and will reassemble them upon extraction.
This multiple volume feature of ARJ makes it suitable as a "poor
man's" backup utility. ARJ saves pathname information, file
date-time stamps, and file attributes in the archive volumes. ARJ
can also create an index file with information about the contents
of each volume. Files contained entirely within one volume are
easily extracted using just the one volume.
3) ARJ provides the facility to store EMPTY directories within its
archives. This makes it easier to do FULL backups and also to
distribute software products that come with EMPTY directories.
4) Both ARJ self-extracting modules provide default pathname support.
That means that you can build self-extracting archives of software
directories containing sub-directories. The end user of the
self-extracting archive does not have to type any command line
options to restore the full directory structure of the software.
This greatly simplifies software distribution.
5) The ARJ archive data structure with its header structure and 32
bit CRC provide excellent archive stability and recovery
capabilities.
6) ARJ provides a security envelope facility to "lock" ARJ archives.
A "locked" ARJ archive cannot be modified by ARJ. This provides
some level of assurance to the user receiving a "locked" ARJ
archive that the contents of the archive have not been tampered
with. Data integrity checks contribute to the security of the
ARJ "lock".
7) The myriad number of ARJ commands and options allow the user
outstanding flexibility in archiver usage.
COMPRESSION COMPARISON TEST RESULTS May 26, 1991
This benchmark archiver test uses the original PKZIP 1.10 distribution
archive, PKZ110.EXE, as the base data to compress. The PKZIP 1.10
distribution archive totals 302196 bytes.
ARCHIVER PACKED SIZE COMPRESS TIME EXTRACT TIME
---------------- ----------- ------------- ------------
ARJ 2.10 -m4 145374 1:30.9 0:52.0
PAK 2.51 138309 2:26.2 0:53.0
LHARC 1.13c 137450 4:05.7 1:46.1
HYPER 2.50 136543 2:30.4 1:54.7
PKZIP 1.10 136245 2:12.0 0:34.5
ARJ 2.10 -m3 135185 1:47.2 0:52.1
ARJ 2.10 -m2 130994 1:49.5 0:50.4
LHA 2.10 130606 2:39.1 0:50.4
ARJ 2.10 (-m1) 129002 2:14.0 0:49.5
ARJ 2.10 -jm1 128120 2:33.0 0.49.3
ARJ 2.10 -jm 127992 3:51.8 0.49.3
ARJ 2.10 produced the best COMPRESSION SPEED and COMPRESSION SIZE
results in this test. PKZIP had the fastest EXTRACTION SPEED.
PAK, HYPER, LHARC, and PKZIP compression size results are very
similar. LHA and ARJ performed significantly better at size
reduction.
This test was run on a 8 MHz 8088 PC with 20 MB hard drive and 512 K
ram. The archives were created on and extracted from a ram disk.
end document
Directory of PC-SIG Library Disk #2772
Volume in drive A has no label
Directory of A:\
UNARJ ARJ 30920 5-30-91 8:37a
ARJ DOC 87289 5-30-91 8:37a
ARJ EXE 99940 5-30-91 8:37a
ARJ_BBS DOC 1452 5-30-91 8:37a
ARJSORT BAT 3205 5-30-91 8:37a
ARJSORT COM 6378 5-30-91 8:37a
ARJSORT DOC 2176 5-30-91 8:37a
LICENSE DOC 11943 5-30-91 8:37a
ORDERFRM DOC 3586 5-30-91 8:37a
README DOC 2326 5-30-91 8:37a
REARJ CFG 439 5-30-91 8:37a
REARJ EXE 35432 5-30-91 8:37a
REARJ DOC 18529 5-30-91 8:37a
REGISTER EXE 12260 5-30-91 8:37a
TECHNOTE DOC 3879 5-30-91 8:37a
UPDATE DOC 9477 5-30-91 8:37a
WHATSNEW DOC 6663 5-30-91 8:37a
WHY_ARJ DOC 4976 5-30-91 8:37a
PREVIEW EXE 7347 4-18-91 1:15p
GO BAT 121 8-03-91 12:48a
20 file(s) 348338 bytes
2048 bytes free