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 by prayer from sorted by
Terminal - Commands by prayer - 26 results
tsocks <program>
2010-07-11 14:16:06
User: prayer
Tags: ssh SOCKS
5

Require:

- tsocks (deb pkg)

- A working SOCKS proxy. It's easy with ssh:

$ ssh -N -D localhost:1080 your.home.pc -p 443

- tsocks configuration in your /etc/tsocks.conf (for the previous):

server = 127.0.0.1

server_port = 1080

sed -i 8d ~/.ssh/known_hosts
watch -tn1 'date -u +%T -d @$(expr $(date -d HH:MM +%s) - $(date +%s)) | toilet -f bigmono12'
2010-06-26 11:56:11
User: prayer
Functions: date expr watch
Tags: date time
-2

Change HH:MM with your target time.

This is for a Debian/Ubuntu GNU system. You need bash (package bash), date (package coreutils) and toilet (package toilet). Install with:

# apt-get install bash coreutils toilet toilet-fonts

while inotifywait -r -e MODIFY dir/; do make; done;
autossh -N -D localhost:1080 myhome.example.net -p 443
2010-05-22 19:52:30
User: prayer
Tags: ssh net
2

You may go to Internet by means of your home ssh server. You must configure your local proxy to send traffic through the proxy. Many programs allows that: firefox, pidgin, skype, gnome, etc.

Your home ssh server must listen in any of the ports permitted by your enterprise firewall. That usually includes 80 and 443.

grep -R usepackage * | cut -d']' -f2 | cut -s -d'{' -f 2 | sed s/"}"/.sty"}"/g | cut -d'}' -f1 | sort | uniq | xargs dpkg -S | cut -d':' -f1 | sort | uniq
curl -s http://standards.ieee.org/regauth/oui/oui.txt | grep $1
type <command>
tar -tf <file.tar.gz> | xargs rm -r
python -c "import scapy.all; print [x[4] for x in scapy.all.conf.route.routes if x[2] != '0.0.0.0'][0]"
mencoder -aid 2 -oac copy file.avi -o english.mp3
inkscape -f file.svg --verb=org.inkscape.color.grayscale --verb=FileSave --verb=FileClose
2009-04-27 18:59:31
User: prayer
Tags: inkscape
5

It requires inkscape 0.46 and lxml packages

disown -a && exit
kill %1
/usr/sbin/arp -i eth0 | awk '{print $3}' | sed 1d
for i in $(ls *.od{tp}); do unoconv -f pdf $i; done
ssh -NL 2000:remotehost:22 remotehost
ssh -fX <user>@<host> <program>
2009-03-10 15:02:35
User: prayer
Functions: ssh
Tags: ssh
15
ssh -X example.org xeyes

The SSH server configuration requires:

X11Forwarding yes # this is default in Debian

And it's convenient too:

Compression delayed

gconftool-2 -t bool -s /desktop/gnome/interface/can_change_accels true
2009-03-10 14:53:33
User: prayer
Tags: gtk
-1

Then, you can assign new accels to GTK menu actions pressing the keys while the option is active.

jhead -autorot *.jpg
emacs +400 code.py
2009-03-03 14:30:19
User: prayer
Functions: emacs
Tags: emacs
2

You may also use +line:column syntax.

sed -i 8d ~/.ssh/known_hosts
nc -l -p 2000 -e /bin/bash
2009-03-02 15:58:25
User: prayer
Tags: Network netcat
6

To connect to the shell run:

nc server.example.org 2000
nc -l -p 2000 < song.mp3
nc -l -p 2000 -c "nc example.org 3000"
2009-03-01 21:28:39
User: prayer
Tags: Network netcat
23

Redirect the local port 2000 to the remote port 3000. The same but UDP:

nc -u -l -p 2000 -c "nc -u example.org 3000"

It may be used to "convert" TCP client to UDP server (or viceversa):

nc -l -p 2000 -c "nc -u example.org 3000"