Hide

What's this?

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.


If you have a new feature suggestion or find a bug, please get in touch via http://commandlinefu.uservoice.com/

Get involved!

You can sign-in using OpenID credentials, or register a traditional username and password.

First-time OpenID users will be automatically assigned a username which can be changed after signing in.

Hide

Stay in the loop…

Follow the Tweets.

Every new command is wrapped in a tweet and posted to Twitter. Following the stream is a great way of staying abreast of the latest commands. For the more discerning, there are Twitter accounts for commands that get a minimum of 3 and 10 votes - that way only the great commands get tweeted.

» http://twitter.com/commandlinefu
» http://twitter.com/commandlinefu3
» http://twitter.com/commandlinefu10

Subscribe to the feeds.

Use your favourite RSS aggregator to stay in touch with the latest commands. There are feeds mirroring the 3 Twitter streams as well as for virtually every other subset (users, tags, functions,…):

Subscribe to the feed for:

Hide

News

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.
Hide

Tags

Hide

Functions

Commands tagged alias from sorted by
Terminal - Commands tagged alias - 65 results
alias ':q'='exit'
2009-09-05 17:59:50
User: tobiasboon
Functions: alias
Tags: vim alias exit :q
9

Put this in your ~/.bashrc file (or the equivalent)

If you use vim a lot, this alias will be immediately obvious. Your brain will thank you.

old='apt-get'; new="su-${old}"; command="sudo ${old}"; alias "${new}=${command}"; $( complete | sed -n "s/${old}$/${new}/p" ); alias ${new}; complete -p ${new}
2009-08-10 00:15:05
User: Josay
Functions: alias sed
4

In Bash, when defining an alias, one usually loses the completion related to the function used in that alias (that completion is usually defined in /etc/bash_completion using the complete builtin).

It's easy to reuse the work done for that completion in order to have smart completion for our alias.

That's what is done by this command line (that's only an example but it may be very easy to reuse).

Note 1 : You can use given command line in a loop "for old in apt-get apt-cache" if you want to define aliases like that for many commands.

Note 2 : You can put the output of the command directly in your .bashrc file (after the ". /etc/bash_completion") to always have the alias and its completion

alias launchpadkey="sudo apt-key adv --keyserver keyserver.ubuntu.com --recv-keys"
2009-06-17 12:02:27
User: azeey
Functions: alias
Tags: alias apt-key
8

Makes it easy to add keys to new ppa sources entries in apt sources.list

Now to add the key for the chromium-daily ppa:

launchpadkey 4E5E17B5
type -all command
kill_daemon() { echo "Daemon?"; read dm; kill -15 $(netstat -atulpe | grep $dm | cut -d '/' -f1 | awk '{print $9}') }; alias kd='kill_daemon
2009-05-26 20:39:56
User: P17
-5

Just find out the daemon with $ netstat -atulpe. Then type in his name and he gets the SIGTERM.

rm_cache() { rm -f $HOME/.mozilla/firefox/<profile>/Cache/* }; alias rmcache='rm_cache'
alias s='ssh -l root'
2009-05-07 15:57:12
User: GouNiNi
Functions: alias
-20

When you have to manage lot of servers, it's boring to type ssh root@myhost for each connection. Now you can type juste "s someting" and you are connected.

You can too add bash_completion script to complet with tab the name of your servers. This will be the next tips from me ;)

mkdir $(date +%Y%m%d)
2009-04-25 14:16:45
User: thebodzio
Functions: date mkdir
Tags: alias date mkdir
11

Not a discovery but a useful one nontheless.

In the above example date format is 'yyyymmdd'. For other possible formats see 'man date'.

This command can be also very convenient when aliased to some meaningful name:

alias mkdd='mkdir $(date +%Y%m%d)'
alias lg='ls --color=always | grep --color=always -i'
2009-04-11 23:15:12
User: kFiddle
Functions: alias grep
Tags: ls alias color grep
6

This is a simple command, but extremely useful. It's a quick way to search the file names in the current directory for a substring. Normally people use "ls *term*" but that requires the stars and is not case insensitive. Color (for both ls and grep) is an added bonus.

function t { ls -ltch $* | head -20 ; }
2009-03-25 20:05:52
User: totoro
Functions: head ls
0

Coming back to a project directory after sometime elsewhere?

Need to know what the most recently modified files are?

This little function "t" is one of my most frequent commands.

I have a tcsh alias for it also:

alias t 'ls -ltch \!* | head -20'

alias showip="ifconfig eth0 | grep 'inet addr:' | sed 's/.*addr\:\(.*\) Bcast\:.*/\1/'"
2009-03-25 07:50:12
User: dizzgo
Functions: alias
Tags: ifconfig alias IP
0

parses the output of ifconfig to show only the configured ip address (in this case from interface eth0).

the regexp is quick'n'dirty im sure it can be done in a better way.

--> this alias does not show your "internet ip" when you're in a nat-environment

alias tproxy='ssh -ND 8118 user@server&; export LD_PRELOAD="/usr/lib/libtsocks.so"'
alias myip='curl -s www.wieistmeineip.de | egrep -o "[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}"'
alias mux='clear && cd ~/Music/ && ls && echo -n "File> " && read msi && mplayer ~/Music/$msi'
2009-03-23 10:45:27
User: Noxn
Functions: alias cd echo ls read
-2

An alias i made for myself to play music in a faster way.

Works great when you have Guake / Tilda installed (Console that drops down like in the game QUAKE)

---

I put this in my bash_alias file (I'm on ubuntu, the bash_alias file does autostart with the right config) but it works putting it in bashrc too. Or anything that autostarts when the console is opened.

---

Needs Mplayer and music files to work. With out music theres nothing to play!

Oh, and also, without modification, this alias will try to play stuff from your ~/Music folder! (case sensitive). Make sure that folder exists and has music OR edit this alias to fit your needs.

alias lh='ls -a | egrep "^\."'