tar: lbzip2

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1 8.1.1.1 Using lbzip2 with GNU 'tar'.
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1 'Lbzip2' is a multithreaded utility for handling 'bzip2' compression,
1 written by Laszlo Ersek.  It makes use of multiple processors to speed
1 up its operation and in general works considerably faster than 'bzip2'.
1 For a detailed description of 'lbzip2' see
1 <http://freshmeat.net/projects/lbzip2> and lbzip2: parallel bzip2
1 utility
1 (http://www.linuxinsight.com/lbzip2-parallel-bzip2-utility.html).
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1    Recent versions of 'lbzip2' are mostly command line compatible with
1 'bzip2', which makes it possible to automatically invoke it via the
1 '--bzip2' GNU 'tar' command line option.  To do so, GNU 'tar' must be
1 configured with the '--with-bzip2' command line option, like this:
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1      $ ./configure --with-bzip2=lbzip2 [OTHER-OPTIONS]
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1    Once configured and compiled this way, 'tar --help' will show the
1 following:
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1      $ tar --help | grep -- --bzip2
1        -j, --bzip2                filter the archive through lbzip2
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1 which means that running 'tar --bzip2' will invoke 'lbzip2'.
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