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commandlinefu.com is the place to record those command-line gems that you return to again and again.

Delete that bloated snippets file you've been using and share your personal repository with the world. That way others can gain from your CLI wisdom and you from theirs too. All commands can be commented on, discussed and voted up or down.


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May 19, 2015 - A Look At The New Commandlinefu
I've put together a short writeup on what kind of newness you can expect from the next iteration of clfu. Check it out here.
March 2, 2015 - New Management
I'm Jon, I'll be maintaining and improving clfu. Thanks to David for building such a great resource!
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Psst. Open beta.

Wow, didn't really expect you to read this far down. The latest iteration of the site is in open beta. It's a gentle open beta-- not in prime-time just yet. It's being hosted over at UpGuard (link) and you are more than welcome to give it a shot. Couple things:

  • » The open beta is running a copy of the database that will not carry over to the final version. Don't post anything you don't mind losing.
  • » If you wish to use your user account, you will probably need to reset your password.
Your feedback is appreciated via the form on the beta page. Thanks! -Jon & CLFU Team

All commands from sorted by
Terminal - All commands - 12,372 results
find src/ -name "*.java" | while read f; do echo -n "$f "; cat "$f" | tr -dc '{}'; echo; done | awk '{ print length($2), $1 }' | sort -n
sed ':a;N;$!ba;s/\n\n/\n%\n/g' input.txt >output
nohup ./my-shell-script.sh &
2012-06-26 19:43:42
User: ankush108
Functions: nohup
Tags: nohup
0

After you execute a command (or shell script) in the background using

&, if you logout from the session, the command will get killed. To avoid

that, you should use nohup as shown below.

sed -e :a -e '$!N;s/\n/ /;ta'
tail -f /var/log/messages.log | while read line ; do echo $line | cut -d \ -f5- | sed s/\\[[0-9]*\\]// | espeak ; done
tar -zcvf <archive<.tar.gz --exclude /home/szimbaro/tmp /home/szimbaro
mount -o loop centos.iso /nmt/dir
> filename.txt
for DOMAIN in $(wbinfo -m); do WBSEP=$(wbinfo --separator); ADSERVER=$(wbinfo ... (Read description for full command)))
2014-06-13 21:03:23
User: jaimerosario
0

###

for ADUSER in $(wbinfo -u --domain="$(wbinfo --own-domain)" | sort); do WBSEP=$(wbinfo --separator); ADUNAME=$(wbinfo -i "$ADUSER" | cut -d ":" -f5); UINFO=$(wbinfo -i "$ADUSER" | cut -d ":" -f3); GINFO=$(wbinfo -i "$ADUSER" | cut -d ":" -f4); SIDU=$(wbinfo -U "$UINFO"); SIDG=$(wbinfo -G "$GINFO"); USERID=$(wbinfo -s "$SIDU" | sed 's/.\{1\}$//' | cut -d "$WBSEP" -f2); GROUPID=$(wbinfo -s "$SIDG" | sed 's/.\{1\}$//' | cut -d "$WBSEP" -f2); echo -e "$ADUSER:$USERID:$ADUNAME:$GROUPID"; done | column -tx -s:

###

alias lp="echo -n \"some text to copy\" | pbcopy; sleep 120 && echo -n \"done\" | pbcopy &"
2014-10-05 19:43:49
User: wsams
Functions: alias
Tags: alias pbcopy
0

This alias is useful if you need to use some text often. Executing the alias will copy the text into your clipboard and then remove it after X seconds.

ps -ef | grep [t]clsh
perl -pe 'print "$. "' <file>
$ echo "command"; `!#:0-$
2011-04-28 17:09:25
Functions: echo
0

since we're repeating the command there after the semicolon, we only need one backtick

fail () { ln -s /nonexistent 0_FAIL_${1}; }
2011-11-06 20:14:33
User: pipeliner
Functions: ln
Tags: ls color link fail
0

If you use colored ls(1), the broken symbolic links significantly differ from regular files and directories in the ls listing. In my case it is bright red. 0 is for getting the first place in the list.

find `pwd` -maxdepth 1 -exec ls --color -d {} \;
ls **/*.c(|pp)~(unit-test|android)/*
amixer -c 0 set Master toggle | sed -n "$ p" | awk '{print $4}' | sed "s/[^0-9]//g"
ls -lahS $(find / -type f -size +10000k)
mplayer $(youtube-dl -g http://youtube.com/example)
egrep -wi --color 'warning|error|critical'
(pv -n centos-7.0-1406-x86_64-DVD.img | dd of=/dev/disk4 bs=1m conv=notrunc,noerror) 2>&1 | dialog --gauge "Copying CentOS to USB Stick in /dev/disk4" 10 70 0
/usr/local/bin/OFPW -mode 1
2009-02-18 14:48:31
User: tomslick
0

Sets the Open Firmware to ask for password when selecting a boot volume other then the hd

svn st | grep ^? | xargs svn add 2> /dev/null
bb
2009-04-22 05:33:25
User: eastwind
0

sudo apt-get install bb

A demoscene intro in ascii art with tracker song

while read l; do echo $RANDOM "$l"; done | sort -n | cut -d " " -f 2-
2010-02-03 22:36:34
User: ketil
Functions: cut echo read sort
0

If you need to randomize the lines in a file, but have an old sort commands that doesn't support the -R option, this could be helpful. It's easy enough to remember so that you can create it as a script and use that.

It ain't real fast. It ain't safe. It ain't super random. Do not use it on untrusted data. It requires bash for the $RANDOM variable to work.