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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.




All commands from sorted by
Terminal - All commands - 11,488 results
rsync -avz --dry-run /somewhere/source_directory /somewhereelse/target_directory
2014-04-01 20:55:59
User: tsener
Functions: rsync
Tags: diff rsync

--dry-run will only show you which files would be otherwise synced with rsync.

-z is for compressio

-v vervose

-a "as is" - permissions, ownership etc.

find . | grep -v svn
2011-01-16 03:51:57
User: gwchamb
Functions: find grep
Tags: grep

Unless you have files that include 'svn' in them, this should provide enough information to be useful. If you need to be certain, add the leading dot in the search pattern

skill -KILL -t ttyS0
2009-05-26 21:47:33
User: jipipayo
Functions: skill

when sometimes do a "w" or "who" command and see an orphan console session from time ago, you could kill with this command.

where ttyS0 its the console to kill.

rxvt-unicode -g 999x999 -sr -depth 32 -bg rg-ba:0000/0000/0000/dddd +sb -T irssi -n irssi -name irssichat -e ssh server.com -Xt screen -aAdr -RR irssi irssi
2009-07-30 04:53:17
User: MTecknology
Functions: screen ssh

This will launch and irssi session on your server. If it's not running, it will create the session. If it's running it'll connect to it and destroy any other connections. If compositing is available, the rxvt window will have transparency added. This window will also open maximized. Anything else this does should be easily figured out in the man pages.

aptitude search ~d<string>
2011-08-02 05:19:13

Especially useful for latex packages, which are listed in the description of their Ubuntu package E.g. say I want to find the Ubuntu package containing latex package aeguill:

aptitude search ~daeguill

p texlive-lang-french - TeX Live: French

cvs checkout -l project/src/
du -hs `du -sk * | sort -rn | cut -f2-`
awk 'BEGIN {count=0;prev=-1} {if(count>0) { if(int($1/100) > int(prev/100)) {print $1} } ; prev=$1; count++}' inputFile > rounded
CMD=chrome ; ps h -o pmem -C $CMD | awk '{sum+=$1} END {print sum}'
nohup gnome-open . 0</dev/null 1>/dev/null 2>/dev/null&
2010-03-22 07:19:37
User: drunkcoder
Functions: nohup

this will open the current directory in nautilus detached from your terminal.

cat input.txt | sed 's/\\\033[^a-zA-Z]*.//g'
perl -ne 's/\^.{1,7}?m//g;print'
2012-01-02 01:32:33
User: Tracerneo
Functions: perl
Tags: perl regex colors

Removes special characters (colors) in '^]]Xm' and '^]]X;Ym' format from file.

Use pipe ('input | perl [...]') or stream ('perl [...]

You can use 'cat -v infile' as 'input' to show special characters instead of interpreting (there is problem with non-ASCII chars, they are replaced by M-[char]).

awk '{pattern=$1$2; seen[pattern]++; if (seen[pattern] == 1) print NR}' inputFile
ps awwux|awk '{print $1}'|sort|uniq
gem list | cut -d" " -f1 | grep --invert-match "test-unit\|psych\|io-console\|rdoc\|json\|bigdecimal\|rake\|minitest" | xargs gem uninstall -aIx
2014-01-10 10:58:59
User: gdelfino
Functions: cut grep xargs

This command removes all ruby gems except the default ones that can not be removed. It is based on http://geekystuff.net/2009/01/14/remove-all-ruby-gems/

WID=xprop -root | grep "_NET_ACTIVE_WINDOW(WINDOW)"| awk '{print $5}' xdotool windowfocus $WID xdotool key ctrl+shift+t wmctrl -i -a $WID
2010-03-22 08:34:24
User: drunkcoder
Functions: awk grep

open a new tab in active gnome-terminal instance

needs sudo apt-get install xdotool

and sudo apt-get install wmctrl

sed -i 's/\r\n//' file.txt
perl -MModule::Name\ 9999 -e 1
2013-01-15 22:51:39
User: three18ti
Functions: perl
Tags: bash perl zsh

This attempts to load a Perl Module (-M flag) and use version 9999, since no module has a version this high, Perl exits either a) telling you the version of the module installed or b) tells you it can't find the module.

du -sm *|sort -rn|head -10
season=1; for file in $(ls) ; do dir=$(echo $file | sed 's/.*S0$season\(E[0-9]\{2\}\).*/\1/'); mkdir $dir ; mv $file $dir; done
2009-05-27 03:30:58
User: lonecat
Functions: echo file mkdir mv sed

It happened to me that I got a season of a tv-show which had all files under the same folder like /home/blah/tv_show/season1/file{1,2,3,4,5,...}.avi

But I like to have them like this:


So I can have both the srt and the avi on one folder without cluttering much. This command organizes everything assuming that the filename contains Exx where xx is the number of the episode.

You may need to set:


if your filenames have spaces.

xwinwrap -ni -argb -fs -s -st -sp -nf -b -- /usr/libexec/xscreensaver/atlantis -count 20 -window-id WID &
2009-09-23 05:29:21
User: dstahlke
Tags: xwinwrap

xwinwrap allows you to run any program in the root desktop pane. I like to run atlantis, it goes well against Fedora 10's blue sun background. At one time this also served a useful purpose for me as a workaround for a problem that would happen when the video card went into sleep mode.

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.

wget -O xkcd_$(date +%y-%m-%d).png `lynx --dump http://xkcd.com/|grep png`; eog xkcd_$(date +%y-%m-%d).png
awk -vRS="</Tag2>" '/<Tag2>/{gsub(/.*<Tag2>/,"");print}' file