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

All commands from sorted by
Terminal - All commands - 11,847 results
<TBD>
2010-12-15 07:48:25
User: chaliyans
-3

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

apache2ctl -V | grep SERVER_CONFIG_FILE
awk '/inet end/ {print $3}' <(ifconfig eth0)
python -c "print 1+1"
nc <ip> <port> -v
curl whatismyip.org
txt="";for i in {1..20};do txt=$txt"$i. ";done;say $txt" Ready or not, here I come"
2011-12-11 05:51:22
User: antic
-3

Hide-and-Seek is one of the greatest games in the parent's arsenal. Your kid runs off and hides for several minutes, while waiting for you to find him/her. This gives you time to catch a breath and check your email without feeling like a loser. If you'd also like to take advantage of the counting time--claiming that thinking space as your own--use this command on your OSX terminal to maximize downtime. Also, if your kid is like mine, you can get away with "for i in {1..100};" :)

iotop
find . | grep deleteme | while read line; do rm $line; done
2009-02-18 00:55:57
User: tec
Functions: find grep read rm
-3

This command deletes all files in all subfolders if their name or path contains "deleteme".

To dry-run the command without actually deleting files run:

find . | grep deleteme | while read line; do echo rm $line; done
fuser -n tcp -s <port> && echo "+open"
aticonfig --pplib-cmd "set fanspeed 0 <number>"
cat [ENTER]^V^O[ENTER]^D
2009-04-17 13:16:56
User: minliu2k
Functions: cat
-3

^V means CTRL-V

[ENTER] means ENTER key

more blast.out| grep virus | awk '{print $1}' > virus_id.txt
ls -R | grep : | sed -e '\''s/:$//'\'' -e '\''s/[^-][^\/]*\//--/g'\'' -e '\''s/^/ /'\'' -e '\''s/-/|/'\''
2009-02-09 22:32:01
User: scw
Functions: grep ls sed
-3

Shows the current directory and those below it in a simple tree structure. Recommended use:

alias lt='$command_above'

find ~/Music/iTunes/ -name *.mp3 -exec cp {} ~/Desktop/Music/ \;
sed -i "s/\s*/ /g;s/\s*$//" input_file
find . -name "*.[ch]" -print | xargs grep -i -H "search phrase"
2011-06-05 23:27:30
User: jblaine
Functions: find grep xargs
Tags: find grep
-3

Original submitter's command spawns a "grep" process for every file found. Mine spawns one grep with a long list of all matching files to search in. Learn xargs, everyone! It's a very powerful and always available tool.

rm -rf `find . -type d -name .svn`
hex() { echo $1 16op | dc; }
git add -u
echo "<?php phpinfo(); ?>" >> /srv/www/htdocs/test.php
curl http://ipecho.net/plain
xcopy /e/h/y /z/i /k /f src dest
2009-02-13 16:25:09
User: piyo
-3

I can remember "cp -av" on Unix like systems to copy files and directories. The same can be done on Windows without extra software, somewhat.

The switches mean:

/E Copies directories and subdirectories, including empty ones.

Same as /S /E. May be used to modify /T.

/H Copies hidden and system files also.

/Y Suppresses prompting to confirm you want to overwrite an

existing destination file.

/Z Copies networked files in restartable mode.

/I If destination does not exist and copying more than one file,

assumes that destination must be a directory.

/K Copies attributes. Normal Xcopy will reset read-only attributes.

/F Displays full source and destination file names while copying.

I don't type that all the time, I stick it into a file called "cpav.cmd" and run that.

echo xcopy /e/h/y /z/i /k /f %1 %2 > cpav.cmd cpav zsh zsh2

http://support.microsoft.com/kb/323007

ls -1 | awk 'BEGIN{srand()} {x[NR] = $0} END{print "Selected", x[1 + int(rand() * NR)]}'
2011-03-13 20:05:06
User: saibbot
Functions: awk ls
Tags: awk random
-3

I use this command to select a random movie from my movie collection..

while true ; do sleep 1 ; clear ; (netstat -tn | grep -P ':36089\s+\d') ; done
2011-09-28 11:39:43
User: hute37
Functions: clear grep netstat sleep true
-3

shell loop to scan netstat output avoiding loolback aliases (local/remote swap for local connections)