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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.

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Terminal - All commands - 12,035 results
(Command too long..See sample Output..)
2009-06-14 20:34:37
User: mohan43u
Tags: bash sed echo tr od

curl doesn't provide url-encoding for 'GET' data, it have an option '--data-urlencode', but its only for 'POST' data. Thats why I need to write down this commandline. With 'perl', 'php' and 'python', this is one liner, but just I wrote it for fun. Works in Ubuntu, will work in all linux varients(I hope it will work in unix varients also).

ssh-copy-id [-i [identity_file]] [user@]machine
for i in ./*.$1; do mv "$i" `echo $i | tr ' ' '_'`; done for i in ./*.$1; do mv "$i" `echo $i | tr '[A-Z]' '[a-z]'`; done for i in ./*.$1; do mv "$i" `echo $i | tr '-' '_'`; done for i in ./*.$1; do mv "$i" `echo $i | tr -s '_' `; done
export PATH=$PATH:`pwd`
2011-02-05 06:29:54
User: YogiBare
Functions: export

This will temporarily add the current directory to your $PATH. Allowing you to execute from that directory for the duration of the session.

function encode4phone() { ffmpeg -acodec libamr_nb -vcodec h263 -i "$1" -s qcif -b 200k -ac 1 -ab 7.4k -ar 8000 "$1.3gp" }
tar cvf - /src | ( cd /dest ; tar xvf - )
2011-09-22 15:35:24
User: a8ksh4
Functions: cd tar

This is how I've done it in the past

echo -e "aa\nbb\ncc\ndd\n123" | sed -e :a -e "/$/N; s/\n/;/; ta"
ps ho command $$
echo $SHELL
tar -zcps <dir> -X <(find <dir> -type f -mtime -<days>) |ssh user@backuphost tar -xzpsC /data/bkup
2009-02-12 22:31:58
User: zb
Functions: find tar

due to bug can not comment

opendiff <file1> <file2>
2009-06-16 03:22:52
User: claytron

This command will open up the two files in FileMerge on OS X. You can also compare two directories.

opendiff directory1 directory2

NOTE: FileMerge is a part of the OS X Developer Tools, available on the install disc.

rsync --daemon --port 9999 --no-detach -v --config .rsyncd.conf
2011-09-22 20:48:31
User: pykler
Functions: rsync

An example config file is placed in the sample output along with the command line call to use it.

The rsync daemon here is setup on the destination, thus requiring the read only = false flag. Also it uses uid and gid of root, change as required.

exec 3<>/dev/tcp/whatismyip.com/80; echo -e "GET /automation/n09230945.asp HTTP/1.0\r\nHost: whatismyip.com\r\n" >&3; a=( $(cat <&3) ); echo ${a[${#a[*]}-1]};
ifconfig -a|grep Bcast:|cut -d\: -f2|awk '{print $1}'
ps -axgu | cut -f1 -d' ' | sort -u
ifconfig -a | awk '/Bcast/{print $2}' | cut -c 5-19
wget -O gsplitter.crx "https://clients2.google.com/service/update2/crx?response=redirect&x=id%3Dlnlfpoefmdfplomdfppalohfbmlapjjo%26uc%26lang%3Den-US&prod=chrome&prodversion=8.0.552.224" ; google-chrome --load-extension gspliter.crx
2010-12-14 19:12:18
User: strzel_a
Functions: wget

Download Gsplitter extension, and execute it with Chrome !

Or download it here :


buf () {oldname=$1; if [ "$oldname" != "" ]; then datepart=$(date +%Y-%m-%d); firstpart=`echo $oldname | cut -d "." -f 1`; newname=`echo $oldname | sed s/$firstpart/$firstpart.$datepart/`; cp -i ${oldname} ${newname}; fi }
2010-12-14 19:58:34
User: Seebi
Functions: cp cut date sed

This backup function preserve the file suffix allowing zsh suffix aliases and desktop default actions to work with the backup file too.

egrep '(expr1|expr2)' file
2011-07-14 14:22:11
User: evandrix
Functions: egrep

to find occurances of expr1 OR expr2

msiexec.exe /i product.msi /l* c:\folder\LogFileName.txt
apt-get remove `deborphan`
mv file_name.extension ..
2009-03-09 15:35:58
User: takealeft
Functions: mv

cd into the directory that contains the file.

this is just the usual move command but shortcut'd.

say you wanted to move a photo img1.png from ~/photos/holidayphotos into the parent directory which is ~/photos

command would be:

~/photos/holidayphotos$ mv img1.png ..

I use Ubuntu so this'll work in debian but not sure what else.

check(){ power=$(acpi -a) ; if [[ $power == *on-line* ]] ; then echo "supply is on"; else echo "somebody is steeling your laptop"; amixer -c0 set Master 100+ unmute ; mpg123 nuclear-alarm.mp3 ; fi } ;while true; do check ; sleep 2 ; done
2011-12-10 13:42:52
User: hoodie

Checks whether your power supply is still plugged in.

If not it will trigger an alarm at maximum volume.

#Client# cat "The Meters - People Say.mp3" | nc -vv 8080; #Server# nc -vv -l -s -p 8080 | mpg123 -v -
2010-01-30 08:50:17
User: Abiden
Functions: cat mpg123

I think I picked this one up from Hak5 (yeah I know.. kinda lame)

2010-12-15 07:48:25
User: chaliyans

Is there a way to print the line BASH is executing without copy+paste the line inside an 'echo' command?