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1990-09-25
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PAK v2.50 by NoGate Consulting Registration $ 15.00
UTIL SEP90 NOGATE PAK SDN COMPRESSION ARC ZIP ARCHIVE
FILES: pak250.sdn
Update
NOTE: PAK is the offical compression utility for SDNet/Works!
-------------------------------------------------------------
PAK is a utility to create and maintain file archives in
compressed form. There are several advantages to compressing
files. On a hard disk, most files are accessed
infrequently. Reducing the size of these files allows more
of them to remain on the hard disk, where they are more
accessible than on a floppy in a file cabinet, and frees disk
space for other use.
Backup is simpler, faster, and cheaper, since the files are
smaller and organized into related groups.
Most importantly, compressed files take less time to transmit
via modem, and time is money when the transmission is long
distance, or to a service such as CompuServe. Even on local
computer bulletin boards, reduced transmission time is an
advantage.
PAK is intended as a replacement for ARC by System
Enhancement Associates and PKARC and PKZIP by Philip Katz.
While PAK is faster than ARC, speed is not the emphasis, and
PAK does not attempt to compete with PKARC in this respect.
However, PAK produces archive files that are consistently 50%
to 90% of the size produced by either ARC, PKARC, or PKZIP
0.9 and supports files created by any of these programs.
While PKZIP 1.0 files are roughly comparable in size to PAK
files, PAK supports more archive formats and more features.
Finally, PAK is available in a full screen edition which is
much easier to use than ARC, PKARC, or PKZIP, and in a
programmer's toolkit for those who want data compression in
their own programs.
Archive Files
-------------
PAK creates and modifies archive files, which have the .PAK,
.ARC, or .ZIP extension. An archive file may contain one,
two, or any number of compressed files. Files in an archive
retain all of the information they had in the directory, such
as name, size, and date. In addition, each file in an
archive has a calculated CRC number, which assures the
detection of damage after events such as file transmission
via modem.
PAK 2.50 is the official archive program for distributing
files through SDNet/Works!, the Shareware Distribution
Network. PAK will automatically recognize files distributed
by The SDN Project and SDNet/Works! (sm). The SDN Project
and SDNet/Works! is a cooperation of BBS Sysops and
not-for-profit.
SDN distributed files have the .SDN extension and a Security
Envelope which protects them from viruses. PAK will
automatically check the integrity of SDN files. If the
archive has been altered in any way, PAK will alert you. If
the archive is untouched, PAK will display a page of
information about the author.
Shareware authors interested in this free distribution should
contact The SDN Project BBS at 203-634-0370, 1200-9600HST
baud, 8-N-1.
_____________________________________________________________
(SDA format (c)Copyright 1990 The SDN Project - SDNet/Works!)
_____________________________________________________________
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