in reply to Wanted: perl equivalent of Solaris compress utility

Simple searches yield some info

.z => decompressing tar.Z files, uncompressing a foo.Z file.

http://search.cpan.org/dist/compress%20.z/ => Compress::LZW (but it does not yet support compress(1)'s .Z files!!)

update: Lempel-Ziv site:perlmonks.thepen.com yields LZW Demystified

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  • Comment on Re: Wanted: perl equivalent of Solaris compress utility

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Re^2: Wanted: perl equivalent of Solaris compress utility
by rinceWind (Monsignor) on Nov 16, 2004 at 13:35 UTC
    Thanks for the pointers, especially LZW Demystified. I've tried Compress::LZW, and as the documentation says, it does not yet support compress(1)'s .Z files.

    I've also tried compressing a small file and attempting to decode it by hand with no success. Here's a challenge: could someone show how the algorithm decompresses the following: 

    /home/test: od -bc foo.Z
0000000 037 235 220 124 320 224 001 321 346 315 033 067 040 322 314 041
         037 235 220   T 320 224 001 321 346 315 033   7     322 314   !
0000020 030 206 314 300 067 146 100 214 021 130 146 116 031 005
         030 206 314 300   7   f   @ 214 021   X   f   N 031 005
0000036
/home/test:

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