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All commands from sorted by
Terminal - All commands - 12,000 results
bind '"\e[24~"':"\"ps -elF;df -h;free -mt;netstat -lnpt;who -a\C-m"""
2009-06-21 23:57:20
User: Neo23x0
17
Up
Down
Create a system overview dashboard on F12 key

Command binds a set of commands to the F12 key.

Feel free to alter the dashboard according to your own needs.

How to find the key codes?

Type

read

Then press the desired key (example: F5)

^[[15~

Try

bind '"\e[15~"':"\"ssh su@ip-address\C-m"""

or

bind '"\e[16~"':"\"apachectl -k restart\C-m"""
Show sample output | Comments (5) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate
!*
2009-06-21 17:58:01
User: Neo23x0
80
Up
Down
Reuse all parameter of the previous command line

!* is all of the arguments to the previous command rather than just the last one.

This is useful in many situations.

Here's a simple example:

vi cd /stuff

oops!

[exit vi, twice]

!*

expands to: cd /stuff

Comments (6) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate
# cd $partition; dd if=/dev/zero of=ShredUnusedBlocks bs=512M; shred -vzu ShredUnusedBlocks
2009-06-21 14:17:22
User: mpb
Functions: cd dd shred
8
Up
Down
securely erase unused blocks in a partition

This command securely erases all the unused blocks on a partition.

The unused blocks are the "free space" on the partition.

Some of these blocks will contain data from previously deleted files.

You might want to use this if you are given access to an old computer and you do not know its provenance.

The command could be used while booted from a LiveCD to clear freespace space on old HD.

On modern Linux LiveCDs, the "ntfs-3g" system provides ReadWrite access to NTFS partitions thus enabling this method to also be used on Wind'ohs drives.

NB depending on the size of the partition, this command could take a while to complete.

Show sample output | Comments (6) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate
sudo sed 's/\o0/\n/g' "/proc/$(pidof -x firefox)/environ" ;# replace firefox
2009-06-21 09:47:02
User: plasticdoc
Functions: sed sudo
3
Up
Down
Show an application's environment variables
Comments (3) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate
watch -t -n1 "date +%T|figlet"
2009-06-21 01:02:37
User: dennisw
Functions: watch
Tags: Linux terminal unix shell date time figlet watch
43
Up
Down
Display a cool clock on your terminal

This command displays a clock on your terminal which updates the time every second. Press Ctrl-C to exit.

A couple of variants:

A little bit bigger text:

watch -t -n1 "date +%T|figlet -f big"

You can try other figlet fonts, too.

Big sideways characters:

watch -n 1 -t '/usr/games/banner -w 30 $(date +%M:%S)'

This requires a particular version of banner and a 40-line terminal or you can adjust the width ("30" here).

Show sample output | Comments (9) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate
sudo pmset -a hibernatemode 1
2009-06-20 22:52:10
User: thebillywayne
Functions: sudo
-1
Up
Down
Mac OS X (laptops ??) only : control hibernation state more easily from Terminal.app

sudo pmset -a hibernatemode 1 sets hiberate on.

sudo pmset -a hibernatemode 0 sets hibernate off.

from the pmset man page:

0001 (bit 0) enables hibernation; causes OS X to write memory state to

hibernation image at sleep time. On wake (without bit 1 set) OS X will

resume from the hibernation image. Bit 0 set (without bit 1 set) causes

OS X to write memory state and immediately hibernate at sleep time.

I often change my MacBook's sleep state. So I created a function for bash to make it a little easier.

Usage:

hibernate (on | off)

"hibernate on" will set your laptop to hibernate if the lid is closed.

"hibernate off" will set your laptop to sleep if the lid is closed.

### note : "proper" indentation isn't preserved on the website

function hibernate()

{

case "${1}" in

on)

sudo pmset -a hibernatemode 1

echo Hibernate mode on.

;;

off)

sudo pmset -a hibernatemode 0

echo Hiberate mode off.

;;

*)

echo "I'm sorry Dave, but I can't do that."

;;

esac

}

To make things easier, add the proper line in your /etc/sudoers file so that your user may invoke pmset without a password. Here's how mine looks:

bwayne luna = NOPASSWD: /usr/bin/pmset

Don't forget that you must edit sudoers with `sudo visudo` from Terminal.app, and not by another text editor.

Sorry this is so Mac OS specific.

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svn status | grep '!' | sed 's/!/ /' | xargs svn del --force
2009-06-20 13:01:07
User: tarzantiger
Functions: grep sed xargs
2
Up
Down
Deleting Files from svn which are missing
Comments (0) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate
mplayer dvdnav:// -dvd-device foo.img -mouse-movements
2009-06-19 23:03:04
User: dezza
3
Up
Down
Play ISO/DVD-files and activate dvd-menu and mouse menu clicks.
Comments (0) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate
unrar p -inul foo.rar|mplayer -
2009-06-19 22:40:01
User: dezza
5
Up
Down
On-the-fly unrar movie in .rar archive and play it, does also work on part archives.
Comments (0) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate
ffmpeg -an -f video4linux -s 320x240 -b 800k -r 15 -i /dev/v4l/video0 -vcodec mpeg4 myvideo.avi
2009-06-19 17:41:43
User: dcabanis
Tags: video ffmpeg codec webcam
3
Up
Down
Record a webcam output into a video file.

The option -an disables audio recording, -f forces the use of video4linux for the input, -s sets the video to the size 320x240, -b sets the recording bitrate, -r sets the frame rate to 15fps, -i gives the input device, -vcodec sets the output format.

Press Q to stop recording or you can specify the recording time with the -t option like -t 00:1:30

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mencoder video.avi lavc -lavcopts vcodec=mpeg4:vbitrate=800 newvideo.avi
2009-06-19 17:30:46
User: dcabanis
Tags: video mencoder codec
1
Up
Down
Encode a file to MPEG4 format

Encode video.avi into newvideo.avi using the libav codec to produce an MPEG4 file with a bitrate of 800

Comments (1) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate
mencoder -tv device=/dev/video1 tv:// -ovc copy -o video.avi
2009-06-19 17:21:33
User: dcabanis
Tags: video mencoder codec
1
Up
Down
Record camera's output to a avi file

video.avi is the resulting file. Press Ctrl+c to stop the recording. You can change the OVC option to another to record into a different format.

Comments (0) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate
sed -n '/START/,${/STOP/q;p}'
2009-06-19 15:27:36
User: mungewell
Functions: sed
Tags: sed grep
3
Up
Down
Efficiently extract lines between markers

GNU Sed can 'address' between two regex, but it continues parsing through to the end of the file. This slight alteration causes it to terminate reading the input file once the STOP match is made.

In my example I have included an extra '/START/d' as my 'start' marker line contains the 'stop' string (I'm extracting data between 'resets' and using the time stamp as the 'start').

My previous coding using grep is slightly faster near the end of the file, but overall (extracting all the reset cycles in turn) the new SED method is quicker and a lot neater.

Show sample output | Comments (1) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate
ga
2009-06-19 12:20:10
User: miccaman
Tags: vim
-5
Up
Down
vim display hex value char under cursor
Comments (0) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate
:!start c:\progra~1\Opera\opera.exe http://www.commandlinefu.com
2009-06-19 12:19:00
User: miccaman
Tags: vim
-15
Up
Down
open an url with opera webbrowser from vim
Comments (0) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate
:r! echo %
2009-06-19 12:17:28
User: miccaman
Functions: echo
Tags: vim
1
Up
Down
vim insert current filename

insert filename

Normal mode: "%p

Insert mode: %

Comments (3) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate
:source ~/.vimrc
2009-06-19 12:14:55
User: miccaman
Tags: vim
3
Up
Down
load changes without logging in and out vim

src: daily vim blog

Comments (0) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate
:set nomore :argdo %s/foo/bar/g | update
2009-06-19 12:12:33
User: miccaman
Tags: vim
2
Up
Down
%s across multiple files with Vim

src: http://www.ibrahim-ahmed.com/2008/01/find-and-replace-in-multiple-files-in.html

Comments (0) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate
dpkg -l 'linux-*' | sed '/^ii/!d;/'"$(uname -r | sed "s/\(.*\)-\([^0-9]\+\)/\1/")"'/d;s/^[^ ]* [^ ]* \([^ ]*\).*/\1/;/[0-9]/!d'
2009-06-19 10:23:38
User: plasticdoc
Functions: sed
Tags: Linux sed dpkg
4
Up
Down
show installed but unused linux headers, image, or modules

will show:

installed linux headers, image, or modules: /^ii/!d

avoiding current kernel: /'"$(uname -r | sed "s/\(.*\)-\([^0-9]\+\)/\1/")"'/d

only application names: s/^[^ ]* [^ ]* \([^ ]*\).*/\1/

avoiding stuff without a version number: /[0-9]/!d

Show sample output | Comments (1) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate
dpkg -l 'linux-*' | sed '/^ii/!d;/'"$(uname -r | sed "s/\(.*\)-\([^0-9]\+\)/\1/")"'/d;s/^[^ ]* [^ ]* \([^ ]*\).*/\1/;/[0-9]/!d' | xargs sudo apt-get -y purge
2009-06-19 10:11:00
User: plasticdoc
Functions: sed sudo xargs
Tags: Linux sed apt-get xargs dpkg purge
6
Up
Down
purge installed but unused linux headers, image, or modules

will purge:

only installed apps: /^ii/!d

avoiding current kernel stuff: /'"$(uname -r | sed "s/\(.*\)-\([^0-9]\+\)/\1/")"'/d

using app names: s/^[^ ]* [^ ]* \([^ ]*\).*/\1/

avoiding stuff without a version number: /[0-9]/!d

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gdiff --unified=10000 input.file1 inpute.file2 | egrep -v "(^\+[a-z]|^\-[a-z])"| sort > outputfile.sorted
2009-06-18 20:35:00
User: slashdot
Functions: egrep sort
Tags: diff sort gdiff compare
-1
Up
Down
Using gdiff only select lines that are common between two files

This commands will make it easier to select only common items between two files being compared. If your lines start with things other than lowercase a-z, adjust this Regex appropriately. Number of lines in the output has been set to no more than 10000, and should be adjusted as needed.

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iptables -t nat -A PREROUTING -p tcp --dport [port of your choosing] -j REDIRECT --to-ports 22
2009-06-18 17:38:59
User: brizznown
Functions: iptables
Tags: iptables nat routing
9
Up
Down
Redirect incoming traffic to SSH, from a port of your choosing

Stuck behind a restrictive firewall at work, but really jonesing to putty home to your linux box for some colossal cave? Goodness knows I was...but the firewall at work blocked all outbound connections except for ports 80 and 443. (Those were wide open for outbound connections.) So now I putty over port 443 and have my linux box redirect it to port 22 (the SSH port) before it routes it internally. So, my specific command would be:

iptables -t nat -A PREROUTING -p tcp --dport 443 -j REDIRECT --to-ports 22

Note that I use -A to append this command to the end of the chain. You could replace that with -I to insert it at the beginning (or at a specific rulenum).

My linux box is running slackware, with a kernel from circa 2001. Hopefully the mechanics of iptables haven't changed since then. The command is untested under any other distros or less outdated kernels.

Of course, the command should be easy enough to adapt to whatever service on your linux box you're trying to reach by changing the numbers (and possibly changing tcp to udp, or whatever). Between putty and psftp, however, I'm good to go for hours of time-killing.

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cut -d: -f1 /etc/passwd | grep -vE "#" | xargs -i{} crontab -u {} -l
2009-06-18 16:49:52
User: hoberion
Functions: crontab cut grep xargs
1
Up
Down
list all crontabs for users

additionally use "find /etc/cron*" for cronscripts

Show sample output | Comments (2) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate
xmllint --format <filename> > <output file>
2009-06-18 15:00:30
User: topperge
4
Up
Down
Adding formatting to an xml document for easier reading

Sometimes you're trying to read through an xml file to determine whats wrong with it and a tool had removed all the linebreaks. xmllint will go ahead and make it pretty for you.

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shred -vzu /tmp/junk-file-to-be-shredded
2009-06-18 12:00:19
User: mpb
Functions: shred
0
Up
Down
securely overwrite a file with random junk, rename it to clear the directory entry and finally delete it
Show sample output | Comments (2) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate