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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.




Commands using sudo from sorted by
Terminal - Commands using sudo - 415 results
sudo usermod -a -G vboxusers <username>
sudo locale-gen en_GB.UTF-8 && sudo locale-gen --purge && sudo dpkg-reconfigure locales
2012-04-09 08:33:22
User: WMP
Functions: sudo

Fix for ubuntu error:

perl: warning: Setting locale failed.

perl: warning: Please check that your locale settings:

LANGUAGE = "en_GB:en",

LC_ALL = (unset),

LANG = "en_GB.UTF-8"

are supported and installed on your system.

perl: warning: Falling back to the standard locale ("C").

locale: Cannot set LC_CTYPE to default locale: No such file or directory

locale: Cannot set LC_MESSAGES to default locale: No such file or directory

locale: Cannot set LC_ALL to default locale: No such file or directory

sudo apt-get remove $(dpkg -l|awk '/^ii linux-image-/{print $2}'|sed 's/linux-image-//'|awk -v v=`uname -r` 'v>$0'|sed 's/-generic//'|awk '{printf("linux-headers-%s\nlinux-headers-%s-generic\nlinux-image-%s-generic\n",$0,$0,$0)}')
2012-04-02 10:53:40
User: mtron
Functions: awk sed sudo

small update for this command to work with linux kernels 3.x

sudo dpkg-reconfigure keyboard-configuration
2012-03-27 21:07:45
Functions: sudo

Bash snippet to force GNU/Linux keyboard settings, layout and configuration.

Usefull when some GNU/Linux distributions such as *Ubuntu's store only limited configation options due to demonstration purposes on LiveUSB or Live persistent devices.

Overcomes the English QWERTY to French AZERTY settings failure.

Code bash en ligne de commande pour forcer l'adoption du clavier AZERTY sur les cl? USB bootable en Ubuntu.

ps h --ppid $(cat /var/run/apache2.pid) | awk '{print"-p " $1}' | xargs sudo strace
2012-03-21 01:59:41
Functions: awk cat ps sudo xargs

Like the original version except it does not include the parent apache process or the grep process and adds "sudo" so it can be run by user.

sudo find foldername -type f -exec chmod 644 {} ";"
sudo find foldername -type d -exec chmod 755 {} ";"
sudo sync && sudo echo 3 | sudo tee /proc/sys/vm/drop_caches
2012-03-17 08:27:58
User: StephenJudge
Functions: echo sudo sync tee
Tags: memory cache

"That's it. Not much to see here. The first command writes any cache data that hasn't been written to the disk out to the disk. The second command tells the kernel to drop what's cached. Not much to it. This invalidates the write cache as well as the read cache, which is why we have the sync command first. Supposedly, it is possible to have some cached write data never make it to disk, so use it with caution, and NEVER do it on a production server. You could ... but why take the risk?

As long as you are running a post 2.6.16 kernel,..."

Source: http://ubuntuforums.org/showpost.php?p=3621283&postcount=1

sudo xvfb-run --server-args="-screen 0, 1024x768x24" ./webkit2png.py -o google.png http://www.google.com
sudo `which adb` ppp "shell:pppd nodetach noauth noipdefault /dev/tty" nodetach noauth noipdefault notty
sudo find . -name "syslog*.gz" -type f | xargs gzip -cd | grep "Mounted"
sudo curl "http://hg.mindrot.org/openssh/raw-file/c746d1a70cfa/contrib/ssh-copy-id" -o /usr/bin/ssh-copy-id && sudo chmod 755 /usr/bin/ssh-copy-id
2012-02-09 20:29:24
User: misterich
Functions: chmod sudo

Mac install ssh-copy-id

From there on out, you would upload keys to a server like this:

(make sure to double quote the full path to your key)

ssh-copy-id -i "/PATH/TO/YOUR/PRIVATE/KEY" username@server

or, if your SSH server uses a different port (often, they will require that the port be '2222' or some other nonsense:

(note the double quotes on *both* the "/path/to/key" and "user@server -pXXXX"):

ssh-copy-id -i "/PATH/TO/YOUR/PRIVATE/KEY" "username@server -pXXXX"

...where XXXX is the ssh port on that server

x="/tmp/auth.html";sudo cat /var/log/auth.log | logtool -o HTML >$x;xdg-open $x;rm $x
2012-02-09 13:36:21
Functions: cat rm sudo

similar to previous except this exports to a temporary file, opens that file with your default web browser, then deletes it.

sudo dmidecode -s system-product-name
sudo dmidecode | grep Product
sudo hal-get-property --udi /org/freedesktop/Hal/devices/computer --key 'system.formfactor'
sudo hal-get-property --udi /org/freedesktop/Hal/devices/computer --key 'system.hardware.product'
sudo svn co svn+ ciccio_diverso://root@
2012-02-03 18:16:02
User: 0disse0
Functions: sudo
Tags: subversion

first need to Edit the configuration file


and under the [tunnels] add this line

ciccio_diverso = /usr/bin/ssh -p 12345

sudo cpupower frequency-set -f <frequency in MHz>
2012-01-27 07:56:34
User: ThatMexikan
Functions: sudo

Allows for manual set of the CPU's frequency. First look at "cpupower frequency-info" for all the available frequency steps your processor can be set at.


sudo cpupower frequency-set -f 1100MHz

sudo cpupower frequency-set -g <frequency governor>
2012-01-27 07:48:10
User: ThatMexikan
Functions: sudo

Lets you change/set a governor to handle the frequency of your CPU.

Available governors are: "powersave", "conservative", "ondemand", "performance", and "userspace".

ssh user@server.com sudo tcpdump -i eth0 -w - 'port 80'| /Applications/Wireshark.app/Contents/Resources/bin/wireshark -k -i -
sudo sh -c "echo ' www.facebook.com' >> /etc/hosts"
2012-01-16 14:06:51
User: devalnor
Functions: sh sudo


echo ' facebook.com' | sudo tee -a /etc/hosts

Do not execute this command if you don't know what you are doing.

sudo iptables -I INPUT -p tcp --dport 3000 -j ACCEPT
2011-12-16 10:39:13
User: Dhinesh
Functions: iptables sudo
Tags: iptables

This command will open tcp port 3000 in your machine

sudo update-rc.d -f gdm remove
2011-12-16 10:12:21
User: kev
Functions: sudo
Tags: update-rc.d

run `sudo update-rc.d gdm defaults` to get it back