Revision [21534]

This is an old revision of bzip2 made by coolpup on 2012-05-15 11:19:01.


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file compression

Verify installed version via the command-line interface:
bzip2 --version

Version 1.0.6 removes a potential security vulnerability, CVE-2010-0405, so all users are recommended to upgrade immediately.
Source code distribution:
Binary code distribution: 113KB 31KB

Dependencies: +grep,+tar

# bzip2 --help
bzip2, a block-sorting file compressor.  Version 1.0.5, 10-Dec-2007.

   usage: bzip2 [flags and input files in any order]

   -h --help           print this message
   -d --decompress     force decompression
   -z --compress       force compression
   -k --keep           keep (don't delete) input files
   -f --force          overwrite existing output files
   -t --test           test compressed file integrity
   -c --stdout         output to standard out
   -q --quiet          suppress noncritical error messages
   -v --verbose        be verbose (a 2nd -v gives more)
   -L --license        display software version & license
   -V --version        display software version & license
   -s --small          use less memory (at most 2500k)
   -1 .. -9            set block size to 100k .. 900k
   --fast              alias for -1
   --best              alias for -9

   If invoked as `bzip2', default action is to compress.
			  as `bunzip2',  default action is to decompress.
			  as `bzcat', default action is to decompress to stdout.

   If no file names are given, bzip2 compresses or decompresses
   from standard input to standard output.  You can combine
   short flags, so `-v -4' means the same as -v4 or -4v, &c.

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