Here is how you can squeeze out few more kilobytes from your zip or gz files by using advzip or advdef from AdvanceCOMP package (installable from Ubuntu respository) :

advpng -z4 example.zip

Output

mypapit:$ advzip -z4 example.zip
      761604      655677  86% example.zip
      761604      655677  86%

Saves you almost 6KB per file.

Similarly gzip files can be recompressed the same way to save more space.

advdef -z4 *.gz

mypapit:$ advdef -z4 *.gz
      214451      207312  96% coolplayer.tar.gz
       21523       20800  96% phex-pkg1.00.tar.gz
       26527       25516  96% png2ico-src-2002-12-08.tar.gz
      262501      253628  96%

Saves you almost 11KB total.

The differences may be small for most of you, but it means a lot in situation where space is at premium and every little bit of Kilobytes count.

p/s: w00t, this is the first post for 2008!

Tags: debian, lzma, open source, opensource, source code, sourcecode, ubuntu, zip

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