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.

OpenID
or
Sign in Register

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

Hide

Credits

Site by David Winterbottom (user root).

Commands using cut

Commands using cut from sorted by
Terminal - Commands using cut - 407 results
netstat -anp |grep 'tcp\|udp' | awk '{print $5}' | sed s/::ffff:// | cut -d: -f1 | sort | uniq -c | sort -n
2009-02-15 09:16:16
User: dt
Functions: awk cut netstat sed sort uniq
12
Up
Down
count IPv4 connections per IP

usefull in case of abuser/DoS attacks.

Show sample output | Comments (2) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate
grep -r "sampleString" . |uniq | cut -d: -f1 | xargs sed -i "/sampleString/d"
2009-02-09 20:21:30
User: sk1418
Functions: cut grep sed xargs
-2
Up
Down
edit files in current and subdir, remove all lines that containing certain string

checking files in current and sub directories, finding out the files containing "sampleString" and removing the containing lines from the file.

* Beware that The command will update the original file [no backup].

The command can be extended if play with 'find' command together,

e.g. it is possible to execute on certain type of files: *.xml, *.txt... (find -name "*.xml" | grep....)

if anybody knows a better solution on that, please drop a comment. thx.

Comments (4) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate
svn st | cut -c 8- | sed 's/^/\"/;s/$/\"/' | xargs tar -czvf ../backup.tgz
2009-02-09 11:24:31
User: chrisdrew
Functions: cut sed tar xargs
11
Up
Down
archive all files containing local changes (svn)

Create a tgz archive of all the files containing local changes relative to a subversion repository.

Add the '-q' option to only include files under version control:

svn st -q | cut -c 8- | sed 's/^/\"/;s/$/\"/' | xargs tar -czvf ../backup.tgz

Useful if you are not able to commit yet but want to create a quick backup of your work. Of course if you find yourself needing this it's probably a sign you should be using a branch, patches or distributed version control (git, mercurial, etc..)

Comments (3) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate
alias nsl 'netstat -f inet | grep -v CLOSE_WAIT | cut -c-6,21-94 | tail +2'
2009-02-07 18:54:12
User: mnikhil
Functions: alias cut grep tail
3
Up
Down
show all programs connected or listening on a network port

Use the aliased command 'nsl'

Comments (1) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate
# cut -d ' ' -f1 /var/log/nginx/nginx-access.log | sort | uniq -c | sort -nr | head -10 | nl
2009-02-07 00:22:11
User: msisk
Functions: cut head sort uniq
1
Up
Down
See the top 10 IP addresses in a web access log
Comments (0) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate
cd ~/.purple/logs/; egrep -ri "i can haz|pwn|l33t|w00|zomg" * | cut -d'/' -f 3 | sort | uniq | xargs -I {} echo "Note to self: ban user '{}'"
2009-02-05 21:23:53
User: rhythmx
Functions: cd cut echo egrep sort uniq xargs
5
Up
Down
Find and list users who talk like "lolcats"

Greps IRC logs for phrases and lists users who said them.

Show sample output | Comments (0) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate
find . -name "*\.php" | xargs grep -o --color "\w\+::\w\+" | cut -d":" -f2 | sort | uniq -c
2009-01-20 23:18:06
User: root
Functions: cut find grep sort uniq xargs
3
Up
Down
Display a list of all PHP classes that are called statically

Searches all .php files for a static instantiation of a class and displays the class names along with their frequencies.

Comments (0) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate