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@PRODUCT_LONG @{r74}@{d}@{_}
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This product is an OS/2-hosted add-on for ARJ v @COUNTERPARTS for DOS. It may be
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used separately from the DOS package but it doesn't contain the
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documentation found in DOS release.
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***********************************************************************
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*** THIS PRODUCT IS DEVELOPED SEPARATELY FROM THE MAINSTREAM ARJ ***
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*** PACKAGE AND THEREFORE IS NOT UPDATED SYNCHRONOUSLY WITH ARJ ***
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***********************************************************************
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This file describes the features specific to the OS/2 port. It is
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suggested that you read the general README file prior to this one.
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* OS/2 version 1.2 or higher, or Windows NT v 3.10 or higher.
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* A 80286 or higher CPU.
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For Windows NT systems:
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* 1024K of free memory
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* OS/2 version 3.0 with Fixpak 25 or higher
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* A 80386SX or higher CPU.
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* 1024K of free memory (512K for each subsequent instance after
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the first one has been started)
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* IBM LIBC and Unicode runtime support (installed by default as
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a mandatory component)
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* External garble modules are provided as OS/2 DLLs. You may not
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use DOS modules with ARJ/2, or vice versa. The encryption
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algorithm is the same, so ARJ/2 garbled archives can be
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* ARJ/2 sets the "Host OS" to "OS/2" on its archives. When
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extracting any such archive with ARJ for DOS, some unusual
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behavior may occur. Versions of ARJ prior to 2.50 convert
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high-ASCII characters in filenames to 7-bit characters by
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ignoring the high bit. So, the filename "�TEST�" will be
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converted to "1TEST1" on extraction.
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ARJ/DOS also strips high bit from archive comments, but only
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if the archive was created by ARJ/2. Archives created with
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ARJ/DOS and then processed under OS/2 are not affected.
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Beginning with version 2.72, ARJ/DOS considers the ARJSFXJR
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archives created under OS/2 to be hostile to the DOS version
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of ARJSFXJR and therefore cannot modify them. In such cases,
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it's advised to use the "-2d" switch under OS/2.
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* ARJ/2 uses the default OS/2 error handler that will normally
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display pop-up menus prompting for action. The -& option
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installs batch error and exception handler (new feature since
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ARJ/2 v 2.62.08). Remember that the ampersand character is
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used in OS/2 to start two processes consequently, so this
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switch will actually split the command line. Type -^& instead
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of -& to install the error handler.
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* ARJSFXJR archives will display ANSI sequences if the ANSI
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support is enabled in the current OS/2 session (it's enabled
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* By default, ARJ/2 stores extended attributes among with files.
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To disable EA storage and thus revert to the traditional
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header format, use the "-2e" option. See a special dedicated
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section in the main README file for details on EA handling.
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* "-2p<n>:<d>" can be used to adjust the priority of ARJ/2. The
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knowledge of OS/2 scheduling system is required to use this
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option. It can dramatically increase performance but slow down
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other processes. The <n> can be equal to 1, 2, 3 or 4:
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1 = idle-time priority
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3 = time-critical priority
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4 = fixed-high priority
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Priority delta values can be given in <d> (defaults to 0). The
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range for <d> is -31 to 31. So, "-2p2" corresponds to the
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regular process priority, and "-2p3:31" gives the maximum
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time-critical priority.
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* ARJSFXJR does not support long filenames under Win95 DOS.
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ARJSFXJR in ARJ/2 supports OS/2 long filenames.
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* On FAT volumes under Windows NT, both long filenames and short
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filenames may be used to specify a filename. If you refer to a
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file with its short name (e.g. "ARJ a lntest LONGFI~1.TXT"),
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the short filename will be stored as entered from console. So,
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no LFN equivalent is placed into the archive, and if a file
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with a similar long filename exists in the archive, it will
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* REARJ/2 may behave incorrectly if the command interpreter
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(specified with COMSPEC= environment variable) is not
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compatible with CMD.EXE. It's also unwise to rename REARJ.EXE
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since it calls itself recursively when converting archives
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within archives (/a).
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* No LIBC is supplied with fixes prior to XR_W032. For use with
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32-bit ARJ/2, the LIBCS.DLL, LIBUNI.DLL and UCONV.DLL may be
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obtained in the OS/2 v 4.00 release (9.023). XR_W032 and later
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CSDs do not require any special action.
added
removed
resource/en/os2.txt
