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man page update.
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Ole Tange
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@ -148,72 +148,32 @@ cc:Peter Simons <simons@cryp.to>, Sandro Cazzaniga <kharec@mandriva.org>,
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Phil Sung <psung@alum.mit.edu>, Michael Shigorin <mike@altlinux.org>,
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Andrew McFague <amcfague@wgen.net>, Steven M. Christensen <sunfreeware@gmail.com>,
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Chris Howey <howeyc@gmail.com>, Fethican Coşkuner <fethicanc@gmail.com>,
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Rogério Brito <rbrito@ime.usp.br>, Jonathan Palardy <jonathan.palardy@gmail.com>,
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Rogério Brito <rbrito@ime.usp.br>,
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Koen Vervloesem <koen@vervloesem.eu>, R. Tyler Croy <tyler@monkeypox.org>,
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ryoichiro.suzuki@gmail.com,kerick@shiftedbit.net,
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Christian Faulhammer <fauli@gentoo.org>, Ryoichiro Suzuki <ryoichiro.suzuki@gmail.com>,
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Jesse Alama <jesse.alama@gmail.com>
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Subject: GNU Parallel 20110322 (the Japan release) released
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Subject: GNU Parallel 2011XXXX ('Libya') released
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GNU Parallel 20110322 (the Japan release) has been released. It is
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GNU Parallel 2011XXXX ('Libya') has been released. It is
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available for download at: http://ftp.gnu.org/gnu/parallel/
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New in this release:
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* --tollef to be switch compatible with Tollef's parallel. This will
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cause -l to mean --load, and the argument separator will be --
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instead of :::
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? Part of Fedora?
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? Part of Debian?
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? Part of Ubuntu?
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* --gnu will force GNU Parallel to behave like GNU Parallel even if
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--tollef is set.
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* Site wide config file: /etc/parallel/config
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This should solve the issue with some packagers renaming GNU
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Parallel to gparallel to avoid the naming conflict.
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By putting --tollef in the site wide config file you can deinstall
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Tollef's parallel and install GNU Parallel instead without any
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change for users or scripts. This is useful for packagers that
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currently rename GNU Parallel or simply do not distribute GNU
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Parallel because the command name conflicts with Tollef's parallel.
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* -L 0 -n 0, and -N 0 implemented. They will read one argument,
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but insert 0 arguments on the command line. Useful if you just want
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to run the same command with the same arguments a number of times.
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* GNU Parallel is now in Fink. Thanks to Jesse Alama.
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http://pdb.finkproject.org/pdb/package.php/parallel
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* Opscode Cookbook for Chef. Thanks to Joshua Timberman.
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https://github.com/opscode/cookbooks/tree/master/gnu_parallel
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* Man page examples translated into Japanese. Thanks to Koshigoe.
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http://w.koshigoe.jp/study/?%5Bsystem%5D+GNU+parallel+%BB%C8%CD%D1%CE%E3#l13
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* GNU Parallel will be presented at:
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* GNU Parallel was presented at:
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- LUGA, Augsburg, 2011-03-26, http://www.luga.de/Aktionen/LIT-2011/Programm
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- OSAA.dk, Aarhus, 2011-04-12
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* Video of presentation from FSCONS 2010-11-07. The presenter was
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_really_ hoarse that day (Something to do with loads of alcohol the
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night before). http://vimeo.com/20838834
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* Example of how to use GNU Parallel on PBS clusters. Thanks to Andrew
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J Dolgert: http://web0.tc.cornell.edu/wiki/index.php?title=Gnu_Parallel
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* Review with examples in German. Thanks to M. Nieberg.
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http://kenntwas.de/2011/linux/gnu-parallel/
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* A review of the --pipe option in German. Thanks to Mathias Huber.
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http://www.linux-magazin.de/NEWS/GNU-Parallel-20110205-stueckelt-Daten
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* A small example of grepping maillogs. Thanks to François Maillet.
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http://www.francoismaillet.com/blog/?p=399
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* Using GNU Parallel instead of xargs. Thanks to James Cuff.
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http://blog.jcuff.net/2011/02/on-train-ride-in.html
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* Using GNU Parallel from 0install (German). Thanks to AdaMin.
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http://forum.ubuntuusers.de/topic/gnu-parallel-mit-zero-install-kurzinfo-kein-wi/
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* First example of using GNU Parallel in Hebrew. Thanks to omry.
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http://nd.gd/jk
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* Bug fixes and man page updates.
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@ -384,7 +384,7 @@ sub get_options_from_array {
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sub parse_options {
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# Returns: N/A
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# Defaults:
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$Global::version = 20110323;
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$Global::version = 20110324;
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$Global::progname = 'parallel';
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$Global::infinity = 2**31;
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$Global::debug = 0;
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@ -1209,15 +1209,14 @@ file:
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B<convert -geometry 120 foo.jpg thumb_foo.jpg>
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If the system has more than 1 CPU core it can be run with
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number-of-cpu-cores jobs in parallel (B<-j> +0). This will do that for
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all jpg files in a directory:
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This will run with number-of-cpu-cores jobs in parallel for all jpg
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files in a directory:
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B<ls *.jpg | parallel -j +0 convert -geometry 120 {} thumb_{}>
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B<ls *.jpg | parallel convert -geometry 120 {} thumb_{}>
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To do it recursively use B<find>:
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B<find . -name '*.jpg' | parallel -j +0 convert -geometry 120 {} {}_thumb.jpg>
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B<find . -name '*.jpg' | parallel convert -geometry 120 {} {}_thumb.jpg>
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Notice how the argument has to start with B<{}> as B<{}> will include path
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(e.g. running B<convert -geometry 120 ./foo/bar.jpg
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@ -1227,7 +1226,7 @@ generate files like ./foo/bar.jpg_thumb.jpg.
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Use B<{.}> to avoid the extra .jpg in the file name. This command will
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make files like ./foo/bar_thumb.jpg:
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B<find . -name '*.jpg' | parallel -j +0 convert -geometry 120 {} {.}_thumb.jpg>
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B<find . -name '*.jpg' | parallel convert -geometry 120 {} {.}_thumb.jpg>
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=head1 EXAMPLE: Substitution and redirection
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@ -1267,6 +1266,10 @@ line number and the URL.
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B<cat urlfile | parallel "wget {} 2>>B</dev/null || grep -n {} urlfile">
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Create a mirror directory with the same filenames except all files and
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symlinks are empty files.
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B<cp -rs /the/source/dir mirror_dir; find mirror_dir -type l | parallel -m rm {} '&&' touch {}>
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=head1 EXAMPLE: Removing file extension when processing files
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@ -2228,17 +2231,17 @@ composed commands and redirection require using B<bash -c>.
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B<ls | parallel "wc {} >> B<{}.wc">
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becomes
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becomes (assuming you have 8 cores)
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B<ls | xargs -d "\n" -P9 -I {} bash -c "wc {} >>B< {}.wc">
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B<ls | xargs -d "\n" -P8 -I {} bash -c "wc {} >>B< {}.wc">
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and
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B<ls | parallel "echo {}; ls {}|wc">
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becomes
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becomes (assuming you have 8 cores)
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B<ls | xargs -d "\n" -P9 -I {} bash -c "echo {}; ls {}|wc">
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B<ls | xargs -d "\n" -P8 -I {} bash -c "echo {}; ls {}|wc">
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=head2 DIFFERENCES BETWEEN find -exec AND GNU Parallel
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