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2011-03-12 - Confoo 2011 presentation
Slides are available from the commandlinefu presentation at Confoo 2011: http://presentations.codeinthehole.com/confoo2011/
2011-01-04 - Moderation now required for new commands
To try and put and end to the spamming, new commands require moderation before they will appear on the site.
2010-12-27 - Apologies for not banning the trolls sooner
Have been away from the interwebs over Christmas. Will be more vigilant henceforth.
2010-09-24 - OAuth and pagination problems fixed
Apologies for the delay in getting Twitter's OAuth supported. Annoying pagination gremlin also fixed.




Commands using xargs from sorted by
Terminal - Commands using xargs - 620 results
find . -name '*.m4a' | xargs -I audiofile mplayer -ao pcm "audiofile" -ao pcm:file="audiofile.wav"
svn st | grep '^\?' | awk '{print $2}' | xargs svn add; svn st | grep '^\!' | awk '{print $2}' | xargs svn rm
2009-05-14 14:34:50
User: stedwick
Functions: awk grep xargs

automatically add and remove files in subversion so that you don't have to do it through the annoying svn commands anymore

du -sb *|sort -nr|head|awk '{print $2}'|xargs du -sh
find / \( -name "*.log" -o -name "*.mylogs" \) -exec ls -lrt {} \; | sort -k6,8 | head -n1 | cut -d" " -f8- | tr -d '\n' | xargs -0 rm
2009-05-10 10:45:48
User: ghazz
Functions: cut find head ls sort tr xargs

This works on my ubuntu/debian machines.

I suspect other distros need some tweaking of sort and cut.

I am sure someone could provide a shorter/faster version.

for i in *jpg; do jpeginfo -c $i | grep -E "WARNING|ERROR" | cut -d " " -f 1 | xargs -I '{}' find /mnt/sourcerep -name {} -type f -print0 | xargs -0 -I '{}' cp -f {} ./ ; done
2009-05-07 00:30:36
User: vincentp
Functions: cp cut find grep xargs

Find all corrupted jpeg in the current directory, find a file with the same name in a source directory hierarchy and copy it over the corrupted jpeg file.

Convenient to run on a large bunch of jpeg files copied from an unsure medium.

Needs the jpeginfo tool, found in the jpeginfo package (on debian at least).

dpkg-query -l| grep -v "ii " | grep "rc " | awk '{print $2" "}' | tr -d "\n" | xargs aptitude purge -y
2009-04-28 19:25:53
User: thepicard
Functions: awk grep tr xargs

This will, for an application that has already been removed but had its configuration left behind, purge that configuration from the system. To test it out first, you can remove the last -y, and it will show you what it will purge without actually doing it. I mean it never hurts to check first, "just in case." ;)

find -type f -printf '%P\000' | egrep -iz '\.(avi|mpg|mov|flv|wmv|asf|mpeg|m4v|divx|mp4|mkv)$' | sort -z | xargs -0 ls -1
xmms2 mlib search NOT +rating | grep -r '^[0-9]' | sed -r 's/^([0-9]+).*/\1/' | sort -R | head | xargs -L 1 xmms2 addid
2009-04-16 20:27:30
Functions: grep head sed sort xargs

If you're like me and want to keep all your music rated, and you use xmms2, you might like this command.

I takes 10 random songs from your xmms2 library that don't have any rating, and adds them to your current playlist. You can then rate them in another xmms2 client that supports rating (I like kuechenstation).

I'm pretty sure there's a better way to do the grep ... | sed ... part, probably with awk, but I don't know awk, so I'd welcome any suggestions.

find /path/to/my/files/ -type f -name "*txt*" | xargs du -k | awk 'BEGIN{x=0}{x=x+$1}END{print x}'
2009-04-16 14:17:04
Functions: awk du find xargs

Use the find command to match certain files and summarise their total size in KBytes.

locate searchstring | xargs grep foo
2009-04-16 12:51:24
User: zimon
Functions: grep locate xargs
Tags: grep locate

Greps located files for an expression.

Example greps all LaTeX files for 'foo':

locate *.tex | xargs grep foo

To avoid searching thousands of files with grep it could be usefull to test first how much files are returned by locate:

locate -c *.tex
svn status | grep "^\?" | awk '{print $2}' | xargs svn add
svn status | grep '^?' | awk '{ print $2; }' | xargs svn add
2009-04-10 21:55:37
Functions: awk grep xargs
Tags: svn awk xargs

Lists the local files that are not present in the remote repository (lines beginning with ?)

and add them.

grep -r "mystring" . |uniq | cut -d: -f1 | xargs sed -i "s/mystring//"
2009-04-09 12:49:01
Functions: cut grep sed uniq xargs

Linux : these script enable you to edit multiple files and remove exact phrase from multiple files

grep "install " /var/log/dpkg.log | awk '{print $4}' | xargs apt-get -y remove --purge
find ./ -not -type d | xargs wc -l | cut -c 1-8 | awk '{total += $1} END {print total}'
man beep | sed -e '1,/Note/d; /BUGS/,$d' | awk '{print $2}' | xargs -IX sudo beep -f X -l 500
2009-04-01 06:48:48
User: jnash
Functions: awk man sed sudo xargs

Are there any creative pieces of music that can be created using beep and the shell? I'd love to hear it!

find ~/.thumbnails/ -type f -atime +30 -print0 | xargs -0 rm
2009-03-30 04:23:07
User: alperyilmaz
Functions: find xargs

By time thumbnail images in ~/thumbnails take up too much space, this command will help deleting old ones.

Find options explained:

-type f : find files only, not directories

-atime +30 : last accessed more than 30 days ago

rpm -q kernel-2* | grep -v $(uname -r) | xargs yum erase -y
2009-03-28 21:41:15
User: Nick
Functions: grep rpm uname xargs

On Fedora clean the boot directory; erase older kernel

find . -name 'junkfiles-*' -print0 | xargs -0 rm
2009-03-26 15:38:42
User: kancer
Functions: find xargs
Tags: find xargs print rm

Can be used for other commands as well, replace rm with ls.

It is easy to make this shorter but if the filenames involved have spaces, you will need to do use find's "-print0" option in conjunction with xargs's "-0" option. Otherwise the shell that xargs uses to execute the "rm" command line will treat the space as a token separator, thereby treating the name as two (or more) names.

ps ax | grep <processname> | grep -v grep | awk '{print $1}' | sudo xargs kill -9
find ./ -mtime -5 | xargs rm -f
ps aux | grep 'httpd ' | awk {'print $2'} | xargs kill -9
find . -name *.php | xargs grep -i -n 'TERM'
find . -name "*.EXT" | xargs grep -n "TODO" | wc -l
echo '123/7' |bc -l |xargs printf "%.3f\n"