All commands

All commands (14,187)

sorted by

Burst a Single PDF Document into Single Pages and Report its Data to doc_data.txt

Require the pdftk package It ll split each page in your pdf file , into a new pdf file and report info on doc_data.txt Show Sample Output

pdftk mydoc.pdf burst

eastwind · 2009-11-10 09:00:50 3

facebook
This is sample output - yours may be different.
-74

ping www.facebook.com

thuynnx · 2009-11-09 20:26:50 11
Sort movies by length, longest first

handles file names with spaces and colons, fixes sort (numeric!), uses mplayer, same output format as other alternatives
This is sample output - yours may be different.
2

find -name '*.avi' | while read i ; do echo $(mplayer -identify -frames 0 -vo null -nosound "$i" 2>&1 | grep ID_LENGTH | cut -d= -f2)" ""$i" ;done | sort -k1 -r -n | sed 's/^$[^\ ]*$\ $.*$$/\2:\1/g'

ZungBang · 2009-11-09 17:14:59 3
Clean your broken terminal

If something fracks up your terminal, just type in 'reset' and everything should be good again.
This is sample output - yours may be different.
2

reset

flart · 2009-11-09 16:15:26 8
Make an iso file out of your entire hard drive

Similar.
This is sample output - yours may be different.
-1

dd if=/dev/hda of=file.img

yooreck · 2009-11-09 16:05:17 5
Clean your broken terminal

When some console full-screen program (minicom, vi, some installers) breaks down your terminal, try this command to revert all options to "sane" settings (sane is a built-in combo of a lot of stty options)
This is sample output - yours may be different.
16

stty sane

darkpand · 2009-11-09 15:58:06 29
Sort movies by length, longest first

Similar but using mediainfo instead of totem-something
This is sample output - yours may be different.
0

for i in *.avi; do echo -n "$i:";mediainfo $i|head | grep PlayTime | cut -d: -f2 ; done | sort -t: -k2 -r

yooreck · 2009-11-09 12:42:20 3
Remove lines that contain a specific pattern($1) from file($2).

The -i option in sed allows in-place editing of the input file. Replace myexpression with any regular expression. /expr/d syntax means if the expression matches then delete the line. You can reverse the functionality to keep matching lines only by using: sed -i -n '/myexpression/p' /path/to/file.txt
This is sample output - yours may be different.
11

sed -i '/myexpression/d' /path/to/file.txt

jgc · 2009-11-09 11:40:45 7
Create a thumbnail from a video file
This is sample output - yours may be different.
5

thumbnail() { ffmpeg -itsoffset -20 -i $i -vcodec mjpeg -vframes 1 -an -f rawvideo -s 640x272 ${i%.*}.jpg }

Nicolargo · 2009-11-09 09:42:55 5
Remove executable bit from all files in the current directory recursively, excluding other directories

With GNU chmod at least it is that simple.
This is sample output - yours may be different.
17

chmod -R -x+X *

CodSpirit · 2009-11-09 07:41:27 9
Remove executable bit from all files in the current directory recursively, excluding other directories

I hate -exec with find, and this pattern quickly expands to other tasks.
This is sample output - yours may be different.
-4

find . -type f | while read f; do chmod -x "$f"; done

alesplin · 2009-11-09 04:30:44 3
Sort movies by length, longest first

Sort .avi movies by time length, print the longest first, and so on... Show Sample Output
This is sample output - yours may be different.
```
Casshern.action.avi:8527
Gomorra.FRENCH.DVDRiP.avi:7886
Harvey.Milk.avi:7698
Rescue.Dawn.guerre.avi:7525
Esther.avi:7374
sept.vies.drame.avi:7366
Pr?dictions.action.avi:7289
Midnight.Run.comedie.aventure.avi:7263
Jugez.moi.coupable.avi:7177
U-Turn.avi:7163
```
1

for i in *.avi; do echo -n "$i:";totem-gstreamer-video-indexer $i | grep DURATION | cut -d "=" -f 2 ; done | sort -t: -k2 -r

iadbungler · 2009-11-09 02:59:53 3
check the status of 'dd' in progress

Stops when the (last) dd process exits.
This is sample output - yours may be different.
-2

while killall -USR1 dd; do sleep 5; done

Mikachu · 2009-11-09 00:27:33 3
Delete everything on hda

If you leave out the block size it defaults to 512 bytes. I set it to 16 Megabytes and it was much faster...
This is sample output - yours may be different.
-3

dd if=/dev/zero of=/dev/hda bs=16M

Clopnixus · 2009-11-09 00:13:35 3
Remove executable bit from all files in the current directory recursively, excluding other directories

Useful if you have copied files from an OS without a permission structure (for example, DOS) and you need to disable all executable files but want to be able to descend into your directories.
This is sample output - yours may be different.
1

find . ! -type d -exec chmod -x {}\;

drashkeev · 2009-11-08 21:27:08 4
Create subdirectory and move files into it

With this form you dont need to cut out target directory using grep/sed/etc.
This is sample output - yours may be different.
4

(ls; mkdir subdir; echo subdir) | xargs mv

mechmind · 2009-11-08 11:40:55 13
Both view and pipe the file without saving to disk

This is a cool trick to view the contents of the file on /dev/pts/0 (or whatever terminal you're using), and also send the contents of that file to another program by way of an unnamed pipe. All the while, you've not bothered saving any extra data to disk, like you might be tempted to do with sed or grep to filter output.
This is sample output - yours may be different.
2

cat /path/to/some/file.txt | tee /dev/pts/0 | wc -l

atoponce · 2009-11-07 22:24:28 5
Upload images to omploader.org from the command line.

This function uploads images to http://omploader.org and then prints out the links to the file. Some coloring can also be added to the command with: ompload() { curl -F file1=@"$1" http://omploader.org/upload|awk '/Info:|File:|Thumbnail:|BBCode:/{gsub(/<[^<]*?\/?>/,"");$1=$1;sub(/^/,"\033[0;34m");sub(/:/,"\033[0m:");print}';} Show Sample Output
This is sample output - yours may be different.
```
user@lappy:~$ ompload ompload.png
  % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
                                 Dload  Upload   Total   Spent    Left  Speed
100 77812  100  2302  100 75510    870  28559  0:00:02  0:00:02 --:--:-- 30558
Info:http://omploader.org/iMnB2eQ
File:http://omploader.org/vMnB2eQ
Thumbnail:http://omploader.org/tMnB2eQ
BBCode:[url=http://omploader.org/vMnB2eQ][img]http://omploader.org/tMnB2eQ[/img][/url]
```
8

ompload() { curl -# -F file1=@"$1" http://ompldr.org/upload|awk '/Info:|File:|Thumbnail:|BBCode:/{gsub(/<[^<]*?\/?>/,"");$1=$1;print}';}

eightmillion · 2009-11-07 20:56:52 5
Play random music from blip.fm
This is sample output - yours may be different.
4

mpg123 `curl -s http://blip.fm/all | sed -e 's#"#\n#g' | grep mp3$ | xargs`

torrid · 2009-11-07 14:48:01 7

Play music from youtube without download

Show Sample Output

wget -q -O - `youtube-dl -b -g $url`| ffmpeg -i - -f mp3 -vn -acodec libmp3lame -| mpg123 -

torrid · 2009-11-07 13:45:13 17

another tweet function

This version of tweet() doesn't require you to put quotes around the body of your tweet... it also prompts you for password. It will still barf on a '!' character.
This is sample output - yours may be different.
7

tweet () { curl -u UserName -d status="$*" http://twitter.com/statuses/update.xml; }

bartonski · 2009-11-07 06:54:02 5
Count emails in an MBOX file
This is sample output - yours may be different.
-1

grep -c '^From ' mbox_file

drewk · 2009-11-07 03:31:05 4
Press Any Key to Continue
This is sample output - yours may be different.
6

read -sn 1 -p 'Press any key to continue...';echo

arcege · 2009-11-07 03:05:21 4
Press Any Key to Continue

This works on some other version of read.
This is sample output - yours may be different.
-4

echo -n "Press any key to continue..." && read

matthewbauer · 2009-11-06 22:49:46 5
Easily decode unix-time (funtion)

A shell function using perl to easily convert Unix-time to text. Put in in your ~/.bashrc or equivalent. Tested on Linux / Solaris Bourne, bash and zsh. using perl 5.6 and higher. (Does not require GNU date like some other commands) Show Sample Output
This is sample output - yours may be different.
```
$ utime 1234567890
Sat Feb 14 01:31:30 2009
```
1

utime(){ perl -e "print localtime($1).\"\n\"";}

MoHaG · 2009-11-06 12:58:10 3
‹ First < 429 430 431 432 433 > Last ›

What's this?

commandlinefu.com is the place to record those command-line gems that you return to again and again. 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.

Share Your Commands

Check These Out

Quickly create simple text file from command line w/o using vi/emacs

1. Issue command 2. After angled bracket appears, enter file contents 3. When done, type "EOF"

convert a pdf to jpeg

Converts a .pdf to .jpg . should work with jpeg | tiff | png | gif | jp2 | pict | bmp | qtif | psd | sgi | tga

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"

Edit the last or previous command line in an editor then execute

If you would like to edit a previous command, which might be long and complicated, you can use the fc (I think it stands for fix command). Invoke fc alone will edit the last command using the default editor (specified by $FCEDIT, $EDITOR, or emacs, in that order). After you make the changes in the editor, save and exit to execute that command. The fc command is more flexible than what I have described. Please 'man bash' for more information.

Paste the contents of OS X clipboard into a new text file

Exit shell faster

Use ^D instead of exit. Also ^D ends input stream when you use terminal for typing into standard input.

list files recursively by size

Terminal - Show directories in the PATH, one per line with sed and bash3.X `here string'

another method : awk '{gsub(/:/, "\n");print}'

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.

Preserve colors when piping tree to less

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:

» all commands
» commands with 3 up-votes (commandlinefu3)
» commands with 10 up-votes (commandlinefu10)

All commands (14,187) the last day the last week the last month all time sorted by date votes

What's this?

Check These Out

Stay in the loop…

All commands (14,187)

sorted by