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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 - 11,925 results
mencoder dvd://1 -aid 128 -o track-1.avi -oac copy -ovc lavc -lavcopts vcodec=mpeg4
2009-05-16 00:08:57
User: dstahlke

Substitute whatever track number you want into the "dvd://1" parameter. The "-aid 128" is to select the English language.

/sbin/dumpe2fs /dev/hda2 | grep 'Block size'
2009-05-15 22:23:21
User: rez0r
Functions: grep
Tags: size output block

Useful to know, especially if you are dealing with output configurations in block size.

Tested on 'Red Hat'.

curl -u USER:PASS -d status="NEW STATUS" http://identi.ca/api/statuses/update.xml
2009-05-15 19:57:00

identica is an open source social networking and micro-blogging service. Based on Laconica, a micro-blogging software package built on the OpenMicroBlogging specification.


psql -U postgres -lAt | gawk -F\| '$1 !~ /^template/ && $1 !~ /^postgres/ && NF > 1 {print $1}'
gtar cpf - . | (cd /dest/directory; gtar xpf -)
2009-05-15 13:23:00
User: mnikhil
Functions: cd
Tags: gtar, gtar

It copies the entire current working directory to the destination directory with compression enabled.

mkdir `date --iso`
2009-05-15 12:30:10
User: hal
Functions: mkdir

Create a directory named with the current date in ISO 8601 format (yyyy-mm-dd). Useful for storing backups by date. The --iso switch may only work with GNU date, can use format string argument for other date versions.

svn log | grep "bodge\|fudge\|hack\|dirty"
2009-05-15 09:55:44
User: root
Functions: grep

A good way to understand what you've let yourself in for. Potential project metric could be the count:

svn log | grep -c "bodge\|fudge\|hack\|dirty"
ffmpeg -i <filename>.flv -vn <filename>.mp3
$ mplayer -dumpaudio -dumpfile <filename>.mp3 <filename>.flv
clfu-seach <search words>
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

find . -name "\.svn" -exec rm -rf {} ";"
curl -s http://checkip.dyndns.org/ | grep -o "[[:digit:].]\+"
sudo pmset schedule sleep "08/31/2009 00:00:00"
2009-05-14 09:31:32
User: hobzcalvin
Functions: sleep sudo

Schedule your Mac to sleep at any future time.

Also wake, poweron, shutdown, wakeorpoweron. Or repeating with

sudo pmset repeat wakeorpoweron MTWRFSU 7:00:00

Query with

pmset -g sched

Lots more at http://www.macenterprise.org/articles/powermanagementandschedulingviathecommandline

alt + 1 .
2009-05-14 09:14:01
User: elementa13

alt + number + dot will insert last command argument at $number place, alt + 0 + . will print last command name. For example

ls /tmp /var ls /usr /home

alt + 1 + . will result in '/usr' , if you press alt + . again, it will result in '/tmp'

alt + 0 + . -> 'ls'

function ec() { ec_var="`pwd`" && cd /etc/ && sudo bzr commit -m "$@" && cd $ec_var; }
2009-05-14 04:34:26
Functions: cd sudo

ec commits changes to etckeeper

must have etckeeper installed with bzr to use this

place inside bashrc

can be used from any directory to commit changes

alias lso="sudo lsof -i -T -n"
2009-05-14 04:01:05
Functions: alias

list what applications using what ports

alias agi="sudo apt-get install" #package_names
2009-05-14 03:31:47
Functions: alias

these are some aliases you can use in bashrc to shorten the amount of typing needed to use apt-get, also can be used as reference if you can't remember alot of commands or command parameter variations,etc...

Please comment with more apt-get aliases if I missed any, thx

chkconfig --list | fgrep :on | sed -e 's/\(^.*\)*0:off/\1:/g' -e 's/\(.\):on/\1/g' -e 's/.:off//g' | tr -d [:blank:] | awk -F: '{print$2,$1}' | ssh host 'cat > foo'
2009-05-13 21:17:39
User: catawampus

And then to complete the task:

Go to target host;

ssh host

Turn everything off:

for i in `chkconfig --list | fgrep :on | awk '{print $1}'` ; do chkconfig --level 12345 $i off; done

Create duplicate config:

while read line; do chkconfig --level $line on; done < foo
alias sbrc="source ~/.bashrc" && alias nbrc="nano ~/.bashrc"
2009-05-13 02:41:37
Functions: alias

alias for editing .bashrc and sourcing it with a quick command, very useful for quickly adding and modifying alias' and functions in bashrc, create lots of alias from commandlinefu very quickly, use nano vim or any other edit if you want, very useful if you have a barcode scanner and you want to run commands quickly with barcodes

tail -f --retry /var/log/syslog /var/log/auth.log | ccze -A
du -sb *|sort -nr|head|awk '{print $2}'|xargs du -sh
~<press tab twice>
hexdump -e '90/1 "%_p" "\n"' /dev/mem | less
2009-05-12 16:20:57
User: copremesis
Functions: hexdump

see what's in your memory right now... sometimes you find passwords, account numbers and url's that were recently used. Anyone have a safe command to clear the memory without rebooting?

2009-05-12 14:36:42
User: fritz_monroe
Functions: export

History usually only gives the command number and the command. This will add a timestamp to the history file.

Note: this will only put the correct timestamp on commands used after the export is done. You may want to put this in your .bashrc