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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!

Top Tags



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 - 12,394 results
gethostip -x
iozone -s 2g -r 64 -i 0 -i 1 -t 1
2009-11-19 10:43:54
User: w00binda

Iozone with a file of 2GB, 64KB record size, write/rewrite and read/re-read test, using just one thread.

find . -type f -not -regex ".*\/.svn\/.*" -exec sed -i 's/oldstring/newstring/g' {} +
grep -UIlr "^M" *
2010-08-20 21:16:34
User: randy909
Functions: grep

Where ^M is entered by ctrl-v-m (v then m). Especially useful on cygwin when checking into a version control system. If you're not using all cygwin tools (e.g. strawberry perl instead of cygwin perl) you'll find yourself dealing with this constantly.

-U tells grep to process the file as binary; it needs this to work

-I ignores binary files so you won't get false positives

-l only prints the filename instead of the offending lines

-r recursive

ls /var/log/ |wc -l
http_proxy=<proxy.server:port> wget <url>
2011-03-30 13:06:19
User: rdc
Functions: wget

On a machine behind a firewall, it's possible to pass the proxy server address in as a prefix to wget to avoid having to set it as an environment variable first.

perl -e "binmode(STDOUT, ':utf8'); print \"$@\""; echo # newline
2012-01-02 10:34:51
User: mathias
Functions: echo perl

This is especially useful to get crazy stuff like space characters copied to your pasteboard correctly.

Source: https://github.com/mathiasbynens/dotfiles/blob/master/.functions

sayspeed() { for i in $(seq 1 `echo "$1"|wc -c`); do echo -n "`echo $1 |cut -c ${i}`"; sleep 0.1s; done; echo "";}
2012-02-11 05:51:42
User: kundan
Functions: echo seq sleep wc

change the time that you would like to have as print interval

and just use it to say whatever you want to

pdftk 1.pdf 2.pdf cat output 12.pdf
git checkout HEAD~2 -- /path/to/dir
scrot -d 3 '/tmp/%Y-%m-%d_$wx$h.png' -e 'cat $f'|curl -F "image=@-" -F "key=1913b4ac473c692372d108209958fd15" http://api.imgur.com/2/upload.xml|grep -Eo "<original>(.)*</original>" | grep -Eo "http://i.imgur.com/[^<]*"
2012-11-13 21:16:09
User: dzup
Functions: grep

That its my personal key that i dont use, if you want yours, go to imgur and get it, or use that one

alias gfind='find . -print0 | xargs -0 egrep -I '
gem install -g
sudo system-image-cli --switch ubuntu-touch/rc-proposed/ubuntu --build 0
2016-02-07 18:24:28
User: bugmenot
Functions: sudo
Tags: ubuntu-phone

Get the latest and hopefully greatest to test out on the Ubuntu Phone - sometimes broken but always interesting. https://developer.ubuntu.com/en/start/ubuntu-for-devices/image-channels/

mysql -s -e "show processlist" |awk '{print $1}'
grep -E ":(`cat bnd-ips.txt | sed 's/\./\\./g' | tr '\n' '|'`)" access.log
2009-07-30 12:54:55
User: Cowboy
Functions: grep

bnd-ips.txt is a list of IP adresses that is concenated for use as regular expression. Yes, this is still very speedy ;=)

vmstat 2 10 | awk 'NR > 2 {print NR, $13}' | gnuplot -e "set terminal png;set output 'v.png';plot '-' u 1:2 t 'cpu' w linespoints;"
ls -lth podcasts/
alias screenr='screen -r $(screen -ls | egrep -o -e '[0-9]+' | head -n 1)'
cd() { if [ -n "$1" ]; then [ -f "$1" ] && set -- "${1%/*}"; else [ -n "$CDDIR" ] && set -- "$CDDIR"; fi; command cd "$@"; }
2011-06-24 08:48:13
User: flatcap
Functions: cd command set
Tags: cd test set

Move efficiently between directories.


This command adds a couple of extra features to cd, without affecting normal use.

CDPATH use is also unaffected. It introduces and environment variable CDDIR which is used as an alternate home directory.


Note: I don't want to alter $HOME because then all my dot files will move.




cd dir

Change directory to "dir" (using CDPATH if necessary)


cd dir/file.txt

Change directory to "dir" (containing folder of "file.txt")

This allows you to cut'n'paste, or use


CDDIR is unset


Change directory to $HOME




Change directory to /home/flatcap/work


For convenience, put the command, and the following, in your .bashrc or .bash_profile

export CDDIR="/home/flatcap/work"

alias cdd="CDDIR=$(pwd)"

find . -type l | (while read FN ; do test -e "$FN" || ls -ld "$FN"; done)
curl --ntlm -u <your Active-Directory-Domain>/<your-domain-username> -T /path/to/local/$FILE http://sharepoint.url.com/doc/library/dir/
2011-09-08 18:08:58
User: barnesmjsa

Use Curl to upload documents from your linux servers to MS Sharepoint servers.

git remote | xargs -n 1 git push
pdftk A=1.pdf B=2.pdf C=3.pdf cat C A output CA.pdf