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From: urban@cbnewsl.att.com (john.urban)
Newsgroups: comp.unix.xenix.sco
Subject: Re: Compression Algorithims
Message-ID: <1991May1.142440.11939@cbnewsl.att.com>
Date: 1 May 91 14:24:40 GMT
References: <47@swatty.UUCP>
Distribution: na
Organization: AT&T Bell Laboratories
Lines: 24

In article <47@swatty.UUCP> root@swatty.UUCP (Superuser) writes:
>What compression algorithms does SCO Unix use in its compress and pack commands
>??? 
>
>Is there an easy way to get source of this stuff???
>
>Thanx,
>
>Larry Krone

Assuming that SCO UNIX is based on AT&T UNIX System V Release 3.2 ....

pack uses the Huffman encoding program

and

compress uses the an algorithm from "A Technique for High Performance Data
Compression" IEEE Computer Vol 17, No 6 (June 1984) pages 8 -> 19


Sincerely,

John Urban
att!garage!jbu