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.

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.

UpGuard checks and validates configurations for every major OS, network device, and cloud provider.
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

May 19, 2015 - A Look At The New Commandlinefu
I've put together a short writeup on what kind of newness you can expect from the next iteration of clfu. Check it out here.
March 2, 2015 - New Management
I'm Jon, I'll be maintaining and improving clfu. Thanks to David for building such a great resource!
Hide

Top Tags


awk, bash, curl, find, grep, Linux, sed
Hide

Functions

Commands using sudo from sorted by
Terminal - Commands using sudo - 443 results
sudo port selfupdate && sudo port upgrade outdated && sudo port clean --all installed && sudo port -f uninstall inactive
2013-06-26 01:12:33
User: noah
Functions: sudo
Tags: mac port macports
0
Up
Down
Macports update and clean all packages
Comments (2) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate
sudo dumpe2fs /dev/sda1 | grep superblock
2013-06-25 08:48:49
User: rugina
Functions: dumpe2fs grep sudo
Tags: partition recovery
0
Up
Down
List partition superblocks
Comments (1) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate
sudo /usr/sbin/exim -bp | sed -n '/\*\*\* frozen \*\*\*/,+1!p' | awk '{print $1}' | tr -d [:blank:] | grep @ | sort | uniq -c | sort -n
2013-06-04 10:49:14
User: blueskin
Functions: awk grep sed sort sudo tr uniq
Tags: mail exim mailq
0
Up
Down
Show counts of messages in exim mail queue, grouped by recipient

Counts of messages by recipient, with frozen messages excluded.

Show sample output | Comments (2) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate
sudo lsof -p `sudo ps aux | grep -i neo4j | grep -v grep | awk '{ print $2 }'`
2013-06-02 10:15:30
User: andycunn
Functions: awk grep ps sudo
Tags: lsof process file descriptor ps grep
0
Up
Down
View all file descriptors owned by a process

Inner "ps...grep..." command searches for a process matching the specified .

"lsof -p lists all file descriptors owned by . Includes open files, sockets, devices, etc...

Show sample output | Comments (1) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate
sudo apt-cache dumpavail | grep Package | cut -d ' ' -f 2 > available.packages
2013-05-18 20:42:22
User: mered
Functions: cut grep sudo
Tags: Linux apt-cache
1
Up
Down
Get all available packages on Ubuntu (or any distro that uses apt)
Comments (1) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate
sudo systemctl enable lxdm
2013-05-16 14:44:55
User: unixmonkey57489
Functions: enable sudo
-1
Up
Down
Enable lxdm login manager in linux
Comments (0) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate
sudo reboot
2013-05-16 14:43:41
User: unixmonkey57489
Functions: sudo
-1
Up
Down
Use this command to reboot the pc in linux
Comments (0) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate
sudo nano /etc/modules-load.d/virtualbox.conf
2013-05-16 14:41:51
User: unixmonkey57489
Functions: sudo
-1
Up
Down
Once Guest Additions are installed (Virtualbox), we need to make sure that the various components of this software are loaded automatically each time the system boots.

To do this, we?ll use nano to create a new configuration file called ?virtualbox.conf?. This file will go in the ?/etc/modules-load.d? directory, which contains files that need to be loaded when Arch boots up. Since adding a file to this directory requires administrative permissions, we?ll need to precede our command with ?sudo? once again.

When nano brings up the blank file, add these three lines to it:

vboxguest

vboxsf

vboxvideo

As usual, when you?re finished entering text in nano, type Control-X to exit to the command line, and answer ?y? for yes when you?re asked whether you want to save your work, and then hit ?Return? to accept the filename. At this point, reboot your machine for the Guest Additions to take effect.

Comments (1) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate
sudo pacman -S virtualbox-guest-utils
2013-05-16 14:39:38
User: unixmonkey57489
Functions: sudo
0
Up
Down
To install guest additions in arch or manjaro linux, run the following command:

Here you have to choose the correct kernel number, for example linux38.

Comments (84) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate
sudo pacman -Scc
2013-05-16 14:19:14
User: unixmonkey57489
Functions: sudo
1
Up
Down
Clean pacman cache in arch linux, manjaro linux

If not success clean cache and try again

Code: [Select]

Show sample output | Comments (3) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate
sudo mhwd-kernel linux00
2013-05-16 14:02:46
User: unixmonkey57489
Functions: sudo
1
Up
Down
Install a new kernel in Manjaro linux

00 is the number of the linux kernel e.g. linux39

Comments (0) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate
sudo pacman-mirrors -g
2013-05-16 13:55:39
User: unixmonkey57489
Functions: sudo
0
Up
Down
Command used to sync arch ro manjaro mirrors
Show sample output | Comments (1) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate
sudo pacman -Syu
2013-05-16 13:49:14
User: unixmonkey57489
Functions: sudo
1
Up
Down
Upgrading packages. Pacman can update all packages on the system with just one command. This could take quite a while depending on how up-to-date the system is. This command can synchronize the repository databases and update the system's packages.

Warning: Instead of immediately updating as soon as updates are available, users must recognize that due to the nature of Arch's rolling release approach, an update may have unforeseen consequences. This means that it is not wise to update if, for example, one is about to deliver an important presentation. Rather, update during free time and be prepared to deal with any problems that may arise.

Pacman is a powerful package management tool, but it does not attempt to handle all corner cases. Read The Arch Way if this causes confusion. Users must be vigilant and take responsibility for maintaining their own system. When performing a system update, it is essential that users read all information output by pacman and use common sense. If a user-modified configuration file needs to be upgraded for a new version of a package, a .pacnew file will be created to avoid overwriting settings modified by the user. Pacman will prompt the user to merge them. These files require manual intervention from the user and it is good practice to handle them right after every package upgrade or removal. See Pacnew and Pacsave Files for more info.

Tip: Remember that pacman's output is logged in /var/log/pacman.log.

Show sample output | Comments (4) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate
sudo useradd -U -m -s /bin/bash new_user
2013-04-29 06:32:49
User: monmo
Functions: sudo useradd
0
Up
Down
Create user
Comments (0) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate
sudo su; sync; echo 3 > /proc/sys/vm/drop_caches
2013-04-23 14:07:15
User: ab_simas
Functions: echo sudo
0
Up
Down
Clear linux cache
Comments (0) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate
sudo shutdown -h now
2013-04-23 02:34:48
User: permanaj
Functions: shutdown sudo
Tags: sudo Shutdown
0
Up
Down
Shutdown ubuntu
Comments (0) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate
sudo !-1
2013-04-22 03:45:14
User: datamining
Functions: sudo
1
Up
Down
Run the last command as root

this command also can run the last command as root

what's more, sudo !-2 can run the second last command as root , and so on

Comments (1) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate
sudo shutdown -h <hour:minute>
2013-04-19 18:54:38
User: devlucas
Functions: shutdown sudo
0
Up
Down
Wait the set time and then Power off

wait a hour and 10 seconds to shutdown

Show sample output | Comments (3) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate
sudo dmidecode --type 17
2013-04-18 20:13:07
User: FadeMind
Functions: sudo
Tags: ram dmidecode
0
Up
Down
Information about RAM HW.

Advanced information about RAM.

Comments (0) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate
sudo apt-get install linux-headers-`uname -r`
2013-04-18 03:18:26
User: farazyashar
Functions: install sudo
2
Up
Down
Install Linux Kernel Headers on Debian-based systems

Install the Linux kernel headers for currently running kernel version on Debian-based systems via apt-get

Show sample output | Comments (9) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate
sudo sed -i 's/Exec=skype %U/Exec=skype --disable-cleanlooks -style GTK %U/' /usr/share/applications/skype.desktop
2013-04-17 08:43:00
User: FadeMind
Functions: sed sudo
Tags: KDE gtk gnome skype gtk2
0
Up
Down
Run skype using your GTK theme

Replace default command in skype.desktop file.

Comments (0) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate
sudo apt-get install git gcc make libx11-dev libxtst-dev pkg-config -y && git clone https://github.com/hanschen/ksuperkey.git && cd ksuperkey && make && sudo mv ksuperkey /usr/bin/ksuperkey && cd ~ && rm -rf ksuperkey
2013-04-17 07:12:46
User: FadeMind
Functions: cd gcc install make mv rm sudo
Tags: apt kubuntu ksuperkey
0
Up
Down
Installation Ksuperkey by one command in Kubuntu.

Install Ksuperkey one command in Kubuntu.

You must manually add ksuperkey to autostart in System Settings KDE.

Comments (2) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate
sudo sed -i 's/raspberrypi/pita1/' /etc/hosts /etc/hostname; sudo reboot
2013-04-16 07:27:41
User: egeoffray
Functions: sed sudo
0
Up
Down
Rename your Raspberry Pi

Your computer's name is raspberrypi and you want to rename it to pita1.

This command will change both the hostname and the name used for netwrk communications.

Comments (1) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate
sudo shutdown 3600 -P
2013-04-14 16:14:23
User: unixmonkey45290
Functions: shutdown sudo
-4
Up
Down
Wait a moment and then Power off

You can easily stop shutdowning process by CTRL+C

Comments (0) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate
sudo -u apache find . -not -perm /o+r
2013-03-26 06:07:55
User: 4Aiur
Functions: find sudo
1
Up
Down
find unreadable file
Comments (1) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate