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Delete all files in current directory that have been modified less than 5 days ago.
This is sample output - yours may be different.
-5

find ./ -mtime -5 | xargs rm -f

skye · 2009-03-23 21:00:45 13
Gets a random Futurama quote from /.
This is sample output - yours may be different.
26

curl -Is slashdot.org | egrep '^X-(F|B|L)' | cut -d \- -f 2

icco · 2009-03-23 19:58:10 18
Display which user run process from given port name

Display which user run process from given port name Show Sample Output
This is sample output - yours may be different.
```
$ fuser -nu tcp 3691
3691/tcp:            22552(john)
```
7

fuser -nu tcp 3691

servermanaged · 2009-03-23 19:40:34 6
find the process that is using a certain port e.g. port 3000
This is sample output - yours may be different.
11

lsof -P | grep ':3000'

thisduck · 2009-03-23 18:41:24 11
copy/mkdir and automatically create parent directories

The --parents option will cause cp or mkdir to automatically create the parent directory structure. mkdir --parents /one/two/three/dir will create /one, /one/two, and /one/two/three as needed before creating dir. cp will copy files with their full directory structure into the target directory with this option. Thanks to Peter Leung at: http://linuxcommando.blogspot.com/2007/11/use-of-parents-flag-in-mkdir-and-c.html which has good examples of usage.
This is sample output - yours may be different.
7

cp --parents /source/file /target-dir

bitmage · 2009-03-23 18:35:15 10
Kill all processes belonging to a single user.
This is sample output - yours may be different.
5

kill -9 `ps -u <username> -o "pid="`

skye · 2009-03-23 17:51:37 10
Kills all processes for a certain program
This is sample output - yours may be different.
-2

kill -9 $(pidof process)

luisuribe · 2009-03-23 17:07:55 8
Go to end of current command line
This is sample output - yours may be different.
-2

CTRL + e

hardest · 2009-03-23 16:42:10 10
Go to begin of current command line

Go to begin of the current command line.
This is sample output - yours may be different.
-1

CTRL + a

hardest · 2009-03-23 16:41:04 8
find a class or file within a number of jar files
This is sample output - yours may be different.
-3

for i in `find . | grep jar$`; do echo $i; jar tvf $i | grep 'search-string'; done;

thisduck · 2009-03-23 16:18:26 6
kills all processes for a certain program e.g. httpd
This is sample output - yours may be different.
-5

ps aux | grep 'httpd ' | awk {'print $2'} | xargs kill -9

thisduck · 2009-03-23 16:15:06 17
Create a favicon

Create a favicon suitable for use on your web site. Note: ppmtowinicon is part of libpbm, not ImageMagick.
This is sample output - yours may be different.
14

convert -colors 256 -resize 16x16 face.jpg face.ppm && ppmtowinicon -output favicon.ico face.ppm

medina · 2009-03-23 15:00:13 10
Downsample mp3s to 128K

This will lower the quality of mp3 files, but is necessary to play them on some mobile devices.
This is sample output - yours may be different.
4

for f in *.mp3 ; do lame --mp3input -b 128 "$f" ./resamp/"$f" ; done

jjclarkson · 2009-03-23 14:39:14 5
Convert .flv to .3gp

Download YouTube videos as .flv and convert them to .3gp for your mobile phone.
This is sample output - yours may be different.
5

ffmpeg -i file.flv -r 15 -b 128k -s qcif -acodec amr_nb -ar 8000 -ac 1 -ab 13 -f 3gp -y out.3gp

jjclarkson · 2009-03-23 14:30:45 5
Recursive file content search
This is sample output - yours may be different.
-3

find . -name *.php | xargs grep -i -n 'TERM'

crashrox · 2009-03-23 14:27:55 31
Create black and white image

Use ImageMagick to create a "black and white" copy of an image.
This is sample output - yours may be different.
4

convert -colorspace gray face.jpg gray_face.jpg

medina · 2009-03-23 14:18:04 7
Add a function you've defined to .bashrc

Example: To store the function addfunction after you have defined it: addfunction addfunction
This is sample output - yours may be different.
6

addfunction () { declare -f $1 >> ~/.bashrc ; }

dagh · 2009-03-23 12:55:04 8
Quick alias for playing music.

An alias i made for myself to play music in a faster way. Works great when you have Guake / Tilda installed (Console that drops down like in the game QUAKE) --- I put this in my bash_alias file (I'm on ubuntu, the bash_alias file does autostart with the right config) but it works putting it in bashrc too. Or anything that autostarts when the console is opened. --- Needs Mplayer and music files to work. With out music theres nothing to play! Oh, and also, without modification, this alias will try to play stuff from your ~/Music folder! (case sensitive). Make sure that folder exists and has music OR edit this alias to fit your needs. Show Sample Output
This is sample output - yours may be different.
```
dude@boxy:~$ mux
File.mp3 anotherfile Moremusic Hardrock.mp3
File> Hardrock.mp3
<Insert lots of unneeded Mplayer output here>
```
-2

alias mux='clear && cd ~/Music/ && ls && echo -n "File> " && read msi && mplayer ~/Music/$msi'

Noxn · 2009-03-23 10:45:27 16
Convert a bunch of oggs into mp3s
This is sample output - yours may be different.
-5

for x in *.ogg; do ffmpeg -i "$x" "`basename "$x" .ogg`.mp3"

iain · 2009-03-23 10:19:12 5
Remux an avi video if it won't play easily on your media device

When playback of AVI files (containing a video format like XviD or DivX) is stuttering, it in 90% of the files is caused by a poorly or wrongly interleaved file. The issue can be permanently resolved by RE-MUXING the AVI video-files that have this problem
This is sample output - yours may be different.
7

mencoder -ovc copy -oac copy -of avi -o remuxed.avi original.avi

iain · 2009-03-23 10:15:36 5

start vim in diff mode

vim will open both files side by side and show colored diffs Show Sample Output

vimdiff file{1,2}

H4rpy · 2009-03-23 10:08:16 6

Enable V4l2 Webcams

Cheese or other webcam software not working? Try this.
This is sample output - yours may be different.
-1

gst-launch v4l2src

samliu · 2009-03-23 05:45:00 5
clear current line
This is sample output - yours may be different.
17

CTRL+u

allinurl · 2009-03-23 04:20:15 22
go to home directory
This is sample output - yours may be different.
-25

cd

veganstraightedg · 2009-03-23 03:12:40 10
loop over a set of items that contain spaces

If you want to operate on a set of items in Bash, and at least one of them contains spaces, the `for` loop isn't going to work the way you might expect. For example, if the current dir has two files, named "file" and "file 2", this would loop 3 times (once each for "file", "file", and "2"): for ITEM in `ls`; do echo "$ITEM"; done Instead, use a while loop with `read`: ls | while read ITEM; do echo "$ITEM"; done Show Sample Output
This is sample output - yours may be different.
```
file
file 2
```
10

ls | while read ITEM; do echo "$ITEM"; done

fletch · 2009-03-22 23:33:13 9
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Create a bash script from last n commands

Uses history to get the last n+1 commands (since this command will appear as the most recent), then strips out the line number and this command using sed, and appends the commands to a file.

Rename files in batch

Find all files with root SUID or SGID executables

Discovering all executables on your system that can be run as another user, especially root, is critical for system security. The above command will find those files with have SUID or SGID bits set and are owned by the root user or group.

Colorize grep output

Download entire commandlinefu archive to single file

'jot' does not come with most *nix distros, so we need to use seq to make it work. This version tested good on Fedora 11.

Find non-standard files in mysql data directory

These files should be removed to keep the size of data directory under control. If you exclude the known important file types like frm and MYD then what-ever is left can be either moved or deleted.

convert a .wmv to a .avi

Which processes are listening on a specific port (e.g. port 80)

swap out "80" for your port of interest. Can use port number or named ports e.g. "http"

Turns hidden applications transparent in the Mac OS X dock.

In Mac OS X, pressing Command+H will hide an application. While that application's windows vanish, there is no other visual feedback, meaning there is no immediate distinction between an application running with no windows open and a hidden application. This command turns hidden applications' icons transparent, providing a clear and obvious distinction. Change YES to NO to restore the previous functionality.

Stop Flash from tracking everything you do.

Brute force way to block all LSO cookies on a Linux system with the non-free Flash browser plugin. Works just fine for my needs. Enjoy.

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All commands (14,187)

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