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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!

Top Tags



Psst. Open beta.

Wow, didn't really expect you to read this far down. The latest iteration of the site is in open beta. It's a gentle open beta-- not in prime-time just yet. It's being hosted over at UpGuard (link) and you are more than welcome to give it a shot. Couple things:

  • » The open beta is running a copy of the database that will not carry over to the final version. Don't post anything you don't mind losing.
  • » If you wish to use your user account, you will probably need to reset your password.
Your feedback is appreciated via the form on the beta page. Thanks! -Jon & CLFU Team

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Terminal - All commands - 12,378 results
grep --color -R "text" directory/
rename *.JPG *.jpg
2014-03-05 14:54:33
User: gtoal
Functions: rename
Tags: batch rename

# Limited and very hacky wildcard rename

# works for rename *.ext *.other

# and for rename file.* other.*

# but fails for rename file*ext other*other and many more

# Might be good to merge this technique with mmv command...

mv-helper() {

argv="`history 1 | perl -pe 's/^ *[0-9]+ +[^ ]+ //'`"

files="`echo \"$argv\"|sed -e \"s/ .*//\"`"

str="`history 1 | perl -pe 's/^ *[0-9]+ +[^ ]+ //' | tr -d \*`"

set -- $str

for file in $files


echo mv $file `echo $file|sed -e "s/$1/$2/"`

mv $file `echo $file|sed -e "s/$1/$2/"`



alias rename='mv-helper #'

httpd2 -V
tar jcpf /home/[usuario]/etc-$(hostname)-backup-$(date +%Y%m%d-%H%M%S).tar.bz2 /etc
2011-04-29 22:53:11
User: mack
Functions: date tar

Simple Compressed Backup of the /etc

Linux compatible

ps afx | grep defunct -B 1 | grep -Eo "[0-9]{3,}" | xargs kill -9
2012-04-27 16:16:34
User: pholz
Functions: grep kill ps xargs

defunct processes (zombies) usually have to be killed by killing their parent processes. this command retrieves such zombies and their immediate parents and kills all of the matching processes.

cat /dev/zero > /dev/sda
2013-09-13 21:47:48
User: fhh
Functions: cat

Exactly the same effect with 3 less characters ;-) (Removes all files/filesystems of a harddisk. It removes EVERYTHING of your hard disk. Be careful when to select a device.)

You can press Ctrl + C after few seconds

(No output)

mtr www.google.com
folder=0;mkdir $folder; while find -maxdepth 1 -type f -exec mv "{}" $folder \; -quit ; do if [ $( ls $folder | wc -l ) -ge 100 ]; then folder=$(( $folder + 1 )); mkdir $folder; fi ; done
2011-02-11 21:28:01
User: Juluan
Functions: find ls mkdir mv wc

If you have a folder with thousand of files and want to have many folder with only 100 file per folder, run this.

It will create 0/,1/ etc and put 100 file inside each one.

But find will return true even if it don't find anything ...

vim -p `ls *.java *.xml *.txt *.bnd 2>/dev/null`
lsof -i
2011-10-03 02:06:30
User: shsingh

This option selects the listing of all Internet and x.25 (HP-UX) network files.

sshostnew () {sed -i "$1d" $HOME/.ssh/known_hosts ; }
2011-11-07 10:33:04
User: _john
Tags: ssh sed

If you work in an environment, where some ssh hosts change regularly this might be handy...

echo "DISPLAY=$DISPLAY xmessage convert db to innodb" | at 00:00
cal | sed -E "2,8s/(^|[^0-9])($(date +%e))( |$)/\1$(echo "\033[0;36m\2\033[0m")\3/g"
2011-04-30 03:16:31
User: iridium172
Functions: cal sed

Colors a the current date in cal output

gvim -u NONE -U NONE
export PS1="[\u@`curl icanhazip.com` \W]$ "
curl -o <bibliography> "http://www.citeulike.org/bibtex/user/<user>"
2009-03-26 23:08:14
User: qubyte

I love CiteULike. It makes keeping a bibtex library easy and keeps all my papers in one place. However, it can be a pain when I add new entries and have to go through the procedure for downloading the new version in my browser, so I made this to grab it for me! I actually pipe it directly into a couple of SED one liners to tidy it up a bit too. Extremely useful, especially if you make a custom BibTeX script that does this first. That way you can sort a fresh BibTeX file for each new paper with no faf.

To use just replace with your CiteULike user name. It doesn't download entries that you've hidden but I don't use that feature anyway.

ps -u<user>
for file in `cat urls.txt`; do echo -n "$file " >> log.txt; curl --head $file >> log.txt ; done
2010-10-19 02:54:13
User: Glutnix
Functions: echo file

urls.txt should have a fully qualified url on each line

prefix with

rm log.txt;

to clear the log

change curl command to

curl --head $file | head -1 >> log.txt

to just get the http status

/opt/google/chrome/google-chrome --user-data-dir=$HOME/.config/google-chrome/`zenity --entry --text="Enter a profile name:"`
2011-01-06 19:41:45
User: gml

Simple Google Chrome profile manager using zenity for profile name input. Place this in a shell script and then use the path to it as the command field in a gnome/kde shortcut. When you start it you will be prompted for a profile to use, if you leave it blank you should get the default profile.

ls | sed 'p;s/foo/bar/' | xargs -n2 mv
ripit -c 0 --outputdir $1 --nosubmission
for k in `git branch -r|awk '{print $1}'`;do echo -e `git show --pretty=format:"%Cgreen%ci_%C(blue)%c r_%Cred%cn_%Creset" $k|head -n 1`$k;done|sort -r|awk -F"_" '{printf("%s %17s %-22s %s\n",$1,$2,$3,$4)}'
svn status | grep "^\?" | awk '{print $2}' | xargs svn add
2009-03-12 15:06:12
User: unixfu73000
Functions: awk grep xargs
Tags: svn

This adds all new files to SVN recursively. It doesn't work for files that have spaces in their name, but why would you create a file with a space in its name in the first place?

dd if=/dev/hda of=file.img
svn log | grep "$LOGNAME" | grep `date '+%Y-%m-%d'`