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PsL Monthly 1993 November
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PSL Monthly Shareware CD-ROM (November 1993).iso
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1993-09-12
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U1-01: Archiving
ARC
System Enhancement Associates, Inc.
$0-$50
#1576
is used to create and maintain file archives. It will also create
self-extracting archive files. An OS/2 version is included.
-------------------------------------
#27059/1862 LHA and Related Utilities Small Programs Disk
-------------------------------------
LHA 2.13
Yoshizaki, Haruyasu
$0
(formerly LHArc) is a file archiver that creates smaller archive files than
anything else available. If this were not enough of an advantage, LHA is free,
unlike ARC and PKZIP, which are shareware and require payment to the author
for continued use.
As most of you are aware, after getting an archived file, you normally have to
have a de-archiver to extract the member files from it. As a result, the
person distributing the file on disk, must sacrifice some of the space saved
to make sure you have a compatible de-archiver. In the case of .ARC files,
Vernon Buerg's small ARCE de-archiver minimized the problem, taking as little
as 12k with its accompanying documentation file.
Katz's PKZip package had the ability to create "self-extracting" archive files
that didn't need a separate de-archiving program, but if you had several
archives on one disk, the extra self-extracting code added to each archive
could easily take up more space than, say, ARCE. On BBS's, if you already had
ARCE, it made no sense to pay extra to download large self-extracting
archives. But LHA's self-extracting code only adds a little over 1k to a file.
LHScan and LHPick (LHSCAN)
Yoshizaki, Haruyasu
$0
saves uncorrupted files from a broken archive. LHScan scans for CRC errors.
LHPick retrieves all files in LZH files free from CRC errors.
2LZH
Bryeans, M.
$0
is a small program that takes care of converting ZIP, ARC, or PAK files to LZH
format (from LHarc). Just type 2LZH and it will convert all the files in the
current directory. When it is done, it even tells you how much disk space you
saved by converting to LHarc.
BkLBat
Goodell, Dan
$0
automates the use of LHA to do back-ups. You can specify multiple lists of files
to be backed up.
ChkLharc 1.1 (CHKLARC)
PAL Software
$0
will search COM and EXE files to determine if they are self-extracting LHARC
files, and, if they are, a determination is made whether the file contains an
"AUTOLARC.BAT" file. (A self-extracting LHARC file has an automatic mode in
which after extraction, it looks for a file named AUTOLARC.BAT and if present,
runs it. Obviously, it would be easy for someone to put damaging commands in a
batch file.)
FV 1.37
Buerg, Vernon D.
$0
will display the names and attributes of files contained within archive files.
It will work with files with extensions of ARC, ZIP, PAK, DWC, LZH, ZOO, and
most self-extracting .COM and .EXE files created by ARC, ZIP, and LZH. It will
also work with the ZIP imploding method and PAK Distilling. You can also
convert self-extracting archives and display ZIP file comments.
LZComp
$0
contains information, source code and history of the LARC, LZHUF, and LZARI
programs.
LHdel
Hendricks, Duane
$0
cleans up a directory by deleting any files in the current directory that are
also in a specified LHarc file, including LHarc self-extracting files. If you
have ever extracted files from an archive file into a crowded subdirectory,
whether intentionally or accidentally, you know how much trouble it can be to
delete just those files when you are through looking at them. Based upon the
utility ARCdel for ARC files, this utility will clean out files from LHarc files
and ZIPdel, also on this disk, will do the same for ZIP files. (The authors of
ZIPdel are no longer at the address provided in the documentation.)
LHdir 1.3
D & D Software Inc.
$0
will let you see the contents of LHarc's self-extracting files; it will
optionally convert the file back to an .LZH file; and it will scan all EXE and
COM file in the current directory to see if any of them are LHarc
self-extracting files.
LH-HDR
is a text file that gives the file layout of an .LZH file created by LHarc
or compatible.
LZHuf 1.0
$0
is the C source code for compression algorithm upon which LHarc is based.
LHRead
various authors
$0
is for extracting and viewing the contents of LZH files created by LHarc.
Unfortunately, it does not work with self-extracting LHarc files. It does,
however, let you view text or PCX graphics files without unarchiving them to
disk first.
Mike's Archive Directory 2.0 (MAD)
Sax, Mike
$5
can show you the contents of every popular archive type available, including
self-extracting files. New features include the ability to display only
specified members of an archive, the display of the name and version of the
program that created the archive, and the name, version and free space
required to extract specified members of an archive.
--------------------------------
END OF SMALL PROGRAMS DISK #1862
--------------------------------
---------------------------------------
#27059/2463 EXE Compression Utilities Small Programs Disk
---------------------------------------
LZEXE 0.91
Bellard, Fabrice
$0
compresses EXE files into a form from which they can still be run. This is like
a self-extracting archive from which the program is extracted into memory and
begins executing, instead of extracting onto disk as a new file. In our tests,
the compressed file actually executed more quickly than the uncompressed file.
The reason is that reading a large file from disk is often more time consuming
than reading a smaller file and then decompressing it in memory.
To give you an idea of the amount of compression it is capable of, the shareware
file manager Qfiler compressed from 115.5k to 54.4k. We freed up megabytes on
one 30meg hard disk by compressing just the EXE files that were 75k or greater.
It will compress smaller EXE files, but the effect is less pronounced. It will
compress COM files if you first convert them to EXE with the COM2EXE utility.
The program even points out the presence of internal overlays, and indicates if
the file has been packed with EXEPACK.
As the author points out, if you are a programmer, you can compress your
programs and impress everyone with what tight code you write. We sometimes get
programs (mostly games) that have just the EXE file with the documentation built
into the program, so there is no separate doc file. In the future, rather than
archive such a file with LHarc, we will compress it with LZEXE. An LZEXE'ed file
is actually smaller than a self-extracting LHarc'ed one.
If a programmer has just an EXE and a DOC file, the EXE file could be compressed
with LZEXE and the DOC file could be converted to a self-scrolling COM file with
TXT2COM or ASC2COM, converted from COM to EXE, and compressed with LZEXE. With
this combo, you get the space savings of archiving without the nuisance to the
user of having to dearchive.
This program comes from France. Since the only input to the program is giving
the name of the file to be compressed on the DOS command line, the French
progress reports are not important. The original documentation is in French, but
an English translation of the documentation is provided. Also see LZEShell on
Archiver Shells disk.
Chk4comp 3.6 (CK4COMP)
Land, John
$0
shows which EXE & COM files have been compressed by any of a dozen different
file compressors. Output is sortable by size or name and is redirectable.
Subdirectories can also be processed. It can identify Windows programs,
overlay files and misnamed EXE and COM files.
ComToExe 1.0 (COM2EXE)
Bellard, Fabrice
$0
converts a COM file into an EXE file, primarily so that the file can then be
compressed by LZEXE.
Convert (CVT-LZ)
Weeks, Gregory D.
$0
translates the French strings in LZEXE.EXE, COMTOEXE.EXE, and UPACKEXE.EXE to
English. This will only work on version .91 of LZEXE, ver. 1.01 of COMTOEXE, and
version 1.00 of UPACKEXE.
LZEShell 3.0 (LZ