2010-04-26 22:52:13 +00:00
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GNU Parallel README
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Please send problems and feedback to bug-parallel@gnu.org.
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= Presentation of GNU Parallel =
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GNU Parallel is a shell tool for executing jobs in parallel. A job is
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typically a single command or a small script that has to be run for
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each of the lines in the input. The typical input is a list of files,
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a list of hosts, a list of users, or a list of tables.
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If you use xargs today you will find GNU Parallel very easy to use. If
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you write loops in shell, you will find GNU Parallel may be able to
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replace most of the loops and make them run faster by running jobs in
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parallel. If you use ppss or pexec you will find GNU Parallel will
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often make the command easier to read.
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GNU Parallel also makes sure output from the commands is the same
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output as you would get had you run the commands sequentially. This
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makes it possible to use output from GNU Parallel as input for other
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programs.
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= Installation =
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Installation of GNU Parallel is a simple as:
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./configure && make && make install
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After this you should be able to do:
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(echo foss.org.my; echo gnu.org; echo freenetproject.org) | parallel traceroute
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This will run traceroute to 3 different hosts in parallel and print
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the output when the traceroutes are done.
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= New versions =
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New versions will be released at: ftp://ftp.gnu.org/gnu/parallel/
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