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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.




All commands from sorted by
Terminal - All commands - 11,925 results
exim -bp | exiqsumm -c
2009-02-15 09:10:50
User: dt

statistics are sorted based on number of recipients.

convert panorama_rainbow_2005.jpg -resize 40% panorama_rainbow_compress.jpg
2009-02-15 08:24:50
User: pcardout

convert -resize 750?500 -quality 80% *.jpg

These are command-line invocations of ImageMagick functions. The first sizes an image file to 40% of original and saves it to a different name, while the second makes all jpg files in a directory sized to 750x500 pixels. Such a pleasure not to need to point and click to make a bunch of thumbnails -- for example.

2009-02-15 05:27:57
User: Williebee

Starts the Performance Monitor console that monitors the system load. It will help to observe and test the system or parts of the system and also help to find any problems.

for x in *.pgp do `cat /file_with_the_passphrase.dat|(gpg --batch --no-tty --yes --passphrase-fd=0 --decrypt `basename $x`; ) > 'dump_content.dat'` done;
cat -n $file | tail -n 100 && head -n number-of-lines-you-want-to-keep > newfile
2009-02-15 01:02:10
User: bbelt16ag
Functions: cat head tail

tells you the number of lines in said file, and then tail the last 100 lines ( or how many are messed up) then u take the total amount of lines and then subract the 100 or so lines u DONT WANT, then do a head -n $new_number and then redirect it to new file.db

doskey l=dir /OD $*
2009-02-15 00:29:23
User: VonC

doskey is the Windows cmd.exe equivalent of the Unix alias. '$*' means 'all parameters'

This example is like alias l='ls -alrt': it will display files from oldest to newest, for one or more directories.

doskey /MACROS list macros defined for cmd.exe, like 'alias' list aliases defined for the current Unix shell.

cd \
2009-02-14 21:53:51
User: VonC
Functions: cd

Useful to quickly get back to the Windows root directory of the current drive from a sub-directory within that drive.

Works also without space between 'cd' and backslash: 'cd\' or 'cd \' have the same effect

driverquery /si /fo table
2009-02-14 18:54:15
User: Williebee

Show device drivers and their properties, including digital signatures /si and in table format /fo.

cat welcome | wall
2009-02-14 18:12:50
User: Williebee
Functions: cat

Show message in file "welcome" to all logged in terminal users.

touch <filename>
> filename
alias rk='d=$(dcop|grep $PPID) && s=$(dcop $d konsole currentSession) && dcop $d $s renameSession'
2009-02-14 00:02:43
User: wwest4
Functions: alias

usage: renam

in a script you must replace $PPID with $(awk '{print $4}' /prod/$PPID/stat)

git config --global alias.log1 "log --pretty=oneline --abbrev-commit"
2009-02-13 23:38:42
User: bartman

This command limits the oputut of git log to one-line per commit and an abbreviated commit ID.

find -printf '%u %g\n' | sort | uniq
2009-02-13 22:42:49
User: leper421
Functions: find sort

find -printf '%u\n' | sort | uniq #just users

find -printf '%g\n' | sort | uniq #just groups

PS1='$PWD$ '
2009-02-13 22:00:57
User: Aldiansblog

If you have tried to change your prompt and made a mistake, use this command to retrieve a standard prompt.

If you used the export command when you changed your prompt, also use it there:

export PS1='$PWD$ '

gconftool-2 --set "/system/http_proxy/use_http_proxy" --type boolean true
2009-02-13 22:00:52
User: Kysic

Solution to activate (or deactivate with false instead of true) the global mandatory proxy under Ubuntu (not tested elsewhere).

Others keys you can configure :

gconftool-2 --set "/system/http_proxy/host" --type string "

gconftool-2 --set "/system/http_proxy/port" --type int 8080

gconftool-2 --set "/system/http_proxy/ignore_hosts" --type list --list-type string ["localhost","","*.local"]

gconftool-2 --set "/system/proxy/mode" --type string manual

2009-02-13 21:58:42
User: Aldiansblog

When you need to work a long time in the same directory, which prompt is of the type:


it is better to hide all this with the command PS1='$'

To retrieve a normal prompt, type: PS1='$PWD$ '

while [ 0 ]; do expr 2365200000 \- `date +%s` \- `date --date "YYYY-mm-dd HH:MM:ss" +%s`; sleep 1; clear; done
2009-02-13 20:02:37
User: wwest4
Functions: expr sleep

watch the seconds of your life tick away - replace YYYY-mm-dd HH:MM:ss w/ your birthtime.

export PS1='\[\e]0;\h \u \w\a\]\n\[\e[0;34m\]\u@\h \[\e[33m\]\w\[\e[0;32m\]\n\$ '
2009-02-13 19:49:17
User: OS2
Functions: export

used in an if-then-else in case the default shell is ksh, not bash.

The $(basename ${0#-}) is handy to echo which shell and strip the dash some flavors put in front of "bash"

if [ $(basename ${0#-}) == "bash" ] ; then

export PS1='\[\e]0;\h \u \w\a\]\n\[\e[0;34m\]\u@\h \[\e[33m\]\w\[\e[0;32m\]\n\$ '



ESC=`echo "\033"`

BEL=`echo "\007"`

RAW=`echo "\r"`

export PS1='-${RAW}${ESC}]0;${HOST} ${USER}${BEL}-${ESC}[0;34m${USER}${ESC}[0m@${ESC}[0;34m${HOST%%.*}${ESC}[0;33m${ESC}[0m $ '


echo $(( (1234567890 - `date -u +\%s`) / 60 / 60 ))
sudo apt-get install preload
2009-02-13 19:34:57
User: danfernbanck
Functions: install sudo

this application monitors the apps you use most often and load them into memory with their libraries and other dependencies.

So now, when you launch Firefox or Thunderbird or OpenOffice, the display is immediate as on Mac.

ls -l | awk '{k=0;for(i=0;i<=8;i++)k+=((substr($1,i+2,1)~/[rwx]/)*2^(8-i));if(k)printf("%0o ",k);print}'
2009-02-13 19:20:54
User: iArno
Functions: awk ls

Do ls with permissions written in octal form.

wget -p --convert-links http://www.foo.com
2009-02-13 19:02:08
User: damniel
Functions: wget

The example will create a directory called "

Caveats: @imports of css files will not be converted.

kill -9 $(pidof *program*)
date -R -d @1234567890