One Day One GNU/Linux Command
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bzip2 -- A Block-sorting file (de)compressor.
Summary:
bzip2 compresses files using the Burrows-Wheeler block sorting text
compression algorithm, and Huffman coding. Compression is generally
considerably better than the conventional compressors, and approaches
the performance of the PPM family of statistical compressors.
Example:
$ bzip2 myfile -- Compress & Save it in myfile.bz2. Delete the input
file.
$ bzip2 -k myfile -- Same as above. But Don't delete the input file.
$ bzip2 -d myfile.bz2 -- Decompress & Save it in myfile. Delete the
input file.
$ bzip2 -kd myfile.bz2 -- Same as above. But don't delete the input
file.
$ bzip2 -fd myfile.bz2 -- Force overwrite of output files (by default,
do not overwrite the existing files).
$ bzip2 -t myfile.bz2 -- Check the integrity of the compressed file.
$ bzip2 -v myfile -- Show the detail status info about the operation.
$ bzip2 -q myfile -- Suppress non-essential warning messages.
$ tar -cjvf myfile.tar.bz2 mydir -- BZip2 thru TAR command.
$ tar -xjvf myfile.tar.bz2 -- BUnZip2 thru TAR command.
Read: man bzip2
HTH :)
--
Bharathi S
