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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

All commands from sorted by
Terminal - All commands - 12,387 results
btc() { echo "1 BTC = $(curl -s https://api.coindesk.com/v1/bpi/currentprice/$1.json | jq .bpi.\"$1\".rate | tr -d \"\"\") $1"; }
2015-09-19 02:49:30
User: benjabean1
Functions: echo

The only pre-requisite is jq (and curl, obviously).

The other version used grep, but jq is much more suited to JSON parsing than that.

doloop() { DONT=/tmp/do-run-run-run; while true; do touch $DONT; (sleep 30; rm $DONT;) & $1 ; if [ -e $DONT ]; then echo restarting too fast; return ; fi ; done }
2009-02-21 02:11:18
User: evil_otto
Functions: echo return rm sleep touch

This runs a command continuously, restarting it if it exits. Sort of a poor man's daemontools. Useful for running servers from the command line instead of inittab.

grep -i '<searchTerm>\|<someOtherSearchTerm>' <someFileName>
2009-05-11 23:05:54
User: scifisamurai
Functions: grep

This is a simple but useful command to search for multiple terms in a file at once. This prevents you from having to do mutliple grep's of the same file.

find . -name "*.java" -type f -perm +600 -print | xargs -I _ sh -c 'grep -q hexianmao _ && iconv -f gb2312 -t utf8 -o _ -c _ '
2011-03-08 13:02:25
User: Sunng
Functions: find iconv sh xargs
Tags: find xargs iconv

One of my friends committed his code in the encoding of GB2312, which broke the build job. I have to find his code and convert.

mkdir copy{1,2}; gzip -dc file.tar.gz | tee >( tar x -C copy1/ ) | tar x -C copy2/
2011-04-14 17:02:05
User: depesz
Functions: gzip mkdir tar tee
Tags: bash tee tar

Sometimes you might need to have two copies of data that is in tar. You might unpack, and then copy, but if IO is slow, you might lower it by automatically writing it twice (or more times)

fileName() { echo "$1" | grep -o "[^/]*$"; }
2011-08-19 18:16:22
User: totti
Functions: echo grep
Tags: grep basename
fileName /path/to/file.ext

quivalent to

basename /path/to/file.ext
sudo npm cache clean -f | sudo npm install -g n | sudo n stable
last|grep `whoami`|grep -v logged|cut -c61-71|sed -e 's/[()]//g'|awk '{ sub("\\+", ":");split($1,a,":");if(a[3]){print a[1]*60*60+a[2]*60+a[3]} else {print a[1]*60+a[2] }; }'|paste -s -d+ -|bc|awk '{printf "%dh:%dm:%ds\n",$1/(60*60),$1%(60*60)/60,$1%60}'
2015-09-19 03:02:43
User: donjuanica
Functions: awk cut grep last paste sed

Add -n to last command to restrict to last num logins, otherwise it will pull all available history.

svn log --stop-on-copy | grep r[0-9] | awk '{print $1}' | sed "s/r//" | sort -n | head -1
git branch -D `git branch | awk '{ if ($0 !~ /next|master/) printf "%s", $0 }'`
2011-04-14 17:43:21
User: denheck
Functions: awk printf

This command will delete all branches in your git repository other than next and master. I use this to cleanup my git repos after making multiple branches and merging them back into next. It's much faster than individually deleting each expired branch using:

git branch -D <branch_name>
df -x tmpfs | grep -vE "(gvfs|procbususb|rootfs)"
2009-02-09 01:54:05
User: bones7456
Functions: df grep

show physical disk using, except tmpfs, gvfs, and so on.

mkdir save && for f in *.mp3; do lame -b xxx "$f" ./save/"${f%.mp3}.mp3"; done
2011-05-30 17:19:36
User: o0110o
Functions: mkdir

Batch Convert MP3 Bitrate to xxxkbps, all the new files will be placed in a folder called "save". Please replace xxx with the desired bitrate. WARNING!!! This will erase any tag information; this is where Picard or EasyTAG will come in handy.

Amharic software
find apps/ -name "*.svn-base" -prune -o -print -name "*.php" | xargs grep -E 'new .+Form\('
2009-02-17 14:56:01
User: ubermuda
Functions: find grep xargs

finds all forms instanciated into a symfony project, pruning svn files.

top -bn 1 | awk '{if($1 ~ /^[0-9]+$/ && $9 > 97) {print $1;exit}}'|xargs kill
2010-06-02 13:51:40
User: chx
Functions: awk top xargs

I found Flash eating one of my CPUs after resume, the command above will help with that. For optional kicks you can put it into a script in /etc/pm/sleep.d/ (aspect in #swhack wrote this for me)

sudo sh /usr/share/doc/libdvdread4/install-css.sh
dd of=output.txt if=input.txt ibs=1 skip=$(expr `stat -c%s input.txt` / 2)
find . -maxdepth 1 -type d | grep -Pv "^.$" | sort -rn --field-separator="-" | sed -n '3,$p' | xargs rm -rf
tb send xmpp:[email protected]
2013-04-08 00:29:43

After installing Termbeamer (see termbeamer.com) you can use it to share a terminal session with one or more others even from behind a firewall or NAT.

hg st --added -n |xargs hg revert
2011-06-01 19:54:41
User: yrcjaya
Functions: xargs
Tags: mercurial

Undo accidental file add to mercurial.

This command undo file adds to all recent adds

find ~ -type f -size +500M -exec ls -ls {} \; | sort -n
2013-11-17 13:13:14
User: marcanuy
Functions: find ls sort
Tags: size find

Find all files larger than 500M in home directory and print them ordered by size with full info about each file.

ps gv [pid] | head -2
2009-02-12 05:04:55
User: ren
Functions: head ps

sh as:

#! /bin/sh

while [ 1 -ne 6 ]; do

pid=`ps -ef | grep -v "grep" | grep "trans_gzdy" | cut -c10-17`

ps gv $pid | head -2

sleep 1


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