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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!
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awk, bash, curl, find, grep, Linux, sed
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Maintained by Jon H.

Site originally by David Winterbottom (user root).

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:

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Your feedback is appreciated via the form on the beta page. Thanks! -Jon & CLFU Team

All commands from sorted by
Terminal - All commands - 12,408 results
mkdir r1 && sshfs remote1:/home/user r1 && rsync r1/stuff remote2:~/backups/
2013-01-11 14:12:22
User: unhammer
Functions: mkdir rsync
Tags: rsync sshfs
-1
Up
Down
rsync from one remote to another remote, only local computer has an open ssh key

rsync by itself doesn't support copying between two remote hosts, but if you use sshfs you can pretend one of them is local. If you have a passphrase-less ssh-key, you can even put this script into a cron job.

A faster alternative is to run ssh-keygen on remote1 and put the pubkey into remote2:~/.ssh/authorized_keys, running rsync on remote1 (or vice versa), but the problem with that is that now a hacker on remote1 can access remote2 at any time. The above method ensures your local computer stays the weak link.

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git rev-list --reverse HEAD | awk "/$(git log -n 1 --pretty="format:%h")/ {print NR}"
2011-11-15 21:49:32
User: atoponce
Functions: awk
Tags: git awk
-1
Up
Down
Sequential revision numbers in Git

Git uses secure hash sums for its revision numbers. I'm sure this is fine and dandy for ultra-secure computing, but it's less than optimal for humans. Thus, this will give you sequential revision numbers in Git all the way from the first commit.

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cat /var/log/nginx/access.log | grep -oe '^[0-9.]\+' | perl -ne 'system("geoiplookup $_")' | grep -v found | grep -oe ', [A-Za-z ]\+$' | sort | uniq -c | sort -n
2012-05-08 13:28:25
User: theist
Functions: cat grep perl sort uniq
Tags: sort uniq geoip
-1
Up
Down
Per country GET report, based on access log. Easy to transform to unique IP

Per country GET report, based on access log. Easy to transform to unique IP

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kill -HUP `ps -A -ostat,ppid,pid,cmd | grep -e '^[Zz]' | awk '{print $2}'`
2009-02-06 02:42:14
User: liupeng
Functions: awk grep kill
-1
Up
Down
find and kill a zombie process

You cannot kill zombies, as they are already dead. But if you have too many zombies then kill parent process or restart service.

You can kill zombie process using PID obtained from the above command. For example kill zombie proces having PID 4104:

# kill -9 4104

Please note that kill -9 does not guarantee to kill a zombie process.

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HISTTIMEFORMAT='' history | awk '{a[$2]++}END{for(i in a){print a[i] " " i}}' | sort -rn | head > /tmp/cmds ; gnuplot -persist <<<'plot "/tmp/cmds" using 1:xticlabels(2) with boxes'
2010-06-17 17:38:16
User: narcelio
Functions: awk head sort
-1
Up
Down
List of commands you use most often

This alternative cleans HISTTIMEFORMAT environment variable and calls gnuplot just after /tmp/cmds is closed, to avoid some errors.

Comments (0) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate
xmlproc_parse.python-xml &>/dev/null <FILE> || exit 1
2009-12-11 17:30:03
User: sputnick
Functions: exit
Tags: python xml
-1
Up
Down
validate xml in a shell script.

For debian likes, that's in python-xml package.

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tail() { thbin="/usr/bin/tail"; if [ "${1:0:1}" != "-" ]; then fc=$(($#==0?1:$#)); lpf="$((($LINES - 3 - 2 * $fc) / $fc))"; lpf="$(($lpf<1?2:$lpf))"; [ $fc -eq 1 ] && $thbin -n $lpf "$@" | /usr/bin/fold -w $COLUMNS | $thbin -n $lpf || $thbin -n $lpf...
2012-03-23 19:00:30
User: fpunktk
Functions: tail
Tags: bash tail variable
-1
Up
Down
a tail function for automatic smart output
tail() { thbin="/usr/bin/tail"; if [ "${1:0:1}" != "-" ]; then fc=$(($#==0?1:$#)); lpf="$((($LINES - 3 - 2 * $fc) / $fc))"; lpf="$(($lpf<1?2:$lpf))"; [ $fc -eq 1 ] && $thbin -n $lpf "$@" | /usr/bin/fold -w $COLUMNS | $thbin -n $lpf || $thbin -n $lpf "$@"; else $thbin "$@"; fi; unset lpf fc thbin; }

This is a function that implements an improved version of tail. It tries to limit the number of lines so that the screen is filled completely. It works with pipes, single and multiple files. If you add different options to tail, they will overwrite the settings from the function.

It doesn't work very well when too many files (with wrapped lines) are specified.

Its optimised for my three-line prompt.

It also works for head. Just s/tail/head/g

Don't set 'thbin="tail"', this might lead to a forkbomb.

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qlmanage -p "yourfilename"
2009-02-16 07:15:03
User: vaporub
-1
Up
Down
OS-X... create a quick look from the command line

Where "docname" is the document you want OS-X to image... file.txt, file.pdf, file.mov, etc

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cvlc <somemusic.mp3>
2011-03-25 20:03:19
User: dynaguy
-1
Up
Down
Playback music in VLC without the GUI interface
Comments (0) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate
while :; do :; done
2012-03-23 19:06:56
User: livibetter
-1
Up
Down
CPU sucker

Use one CPU core entirely.

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translate () {lang="ru"; text=`echo $* | sed 's/ /%20/g'`; curl -s -A "Mozilla/5.0" "http://translate.google.com/translate_a/t?client=t&text=$text&sl=auto&tl=$lang" | sed 's/\[\[\[\"//' | cut -d \" -f 1}
2014-07-10 18:26:34
User: 2b
Functions: cut sed
Tags: google translate
-1
Up
Down
Google Translate

Change lang from ru to something else.

Curl version - Mac OS etc, any system w/o wget.

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find . -exec grep foobar /dev/null {} \; | awk -F: '{print $1}' | xargs vi
2009-09-03 16:02:18
User: verboEse
Functions: awk find grep xargs
Tags: vim awk find grep
-1
Up
Down
Edit all files found having a specific string found by grep

needs no GNU tools, as far as I see it

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mp32ogg file.mp3
2009-11-16 20:22:48
User: nickleus
-1
Up
Down
convert mp3 to ogg

why would you want to convert mp3's to ogg? 1 reason is because ardour doesn't support mp3 files because of legal issues. this is really the only reason you would do this, unless you have really bad hearing and also want smaller file sizes, because converting from one lossy format to another isn't a good idea.

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jot -b '#' -s '' $COLUMNS
2010-04-13 22:03:39
User: dennisw
Tags: tr tput printf
-1
Up
Down
Print a row of characters across the terminal

For BSD-based systems, including OS X, that don't have seq.

This version provides a default using tput in case $COLUMNS is not set:

jot -b '#' -s '' ${COLUMNS:-$(tput cols)}
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sed -i 's/[ \t]\+$//g' file.txt
2011-09-07 01:47:44
User: elder
Functions: sed
Tags: sed regex
-1
Up
Down
Remove trailing whitespaces (or tabs) from a text file

This command is useful when you are programming, for example.

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net user USERNAME /domain
2014-01-02 20:22:46
User: shawn_abdushakur
Tags: windows
-1
Up
Down
Show all groups user is a member of and other useful info
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wget -r --wait=5 --quota=5000m --tries=3 --directory-prefix=/home/erin/Documents/erins_webpages --limit-rate=20k --level=1 -k -p -erobots=off -np -N --exclude-domains=del.icio.us,doubleclick.net -F -i ./delicious-20090629.htm
2009-07-02 01:46:21
User: bbelt16ag
Functions: wget
-1
Up
Down
my command for downloading delicious web links,

just a alternative using a saved html file of all of my bookmarks. works well although it takes awhile.

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cat /proc/cpuinfo
2010-09-24 09:27:58
User: magicjohnson_
Functions: cat
Tags: bash cpuinfo
-1
Up
Down
CPU architecture details

It works in every linux box

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ash prod<tab>
2012-05-12 19:51:02
User: c3w
Tags: ssh screen osx json ruby
-1
Up
Down
OSX Terminal helper with tab completion, ssh tunneling, and now screen re-attach

http://github.com/c3w/ash

. a Ruby SSH helper script

. reads a JSON config file to read host, FQDN, user, port, tunnel options

. changes OSX Terminal profiles based on host 'type'

USAGE:

put 'ash' ruby script in your PATH

modify and copy ashrc-dist to ~/.ashrc

configure OSX Terminal profiles, such as "webserver", "development", etc

run "ash myhostname" and away you go!

v.2 will re-attach to a 'screen' named in your ~/.ashrc

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ls
2013-03-14 01:28:01
User: yingkailiang
Functions: ls
-1
Up
Down
ls
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curl -k https://Username:[email protected]/v1/posts/all?red=api | xml2| \grep [email protected]' | cut -d\= -f 2- | sort | uniq | linkchecker -r0 --stdin --complete -v -t 50 -F blacklist
2013-05-04 17:43:21
User: bbelt16ag
Functions: cut sort uniq
Tags: bash curl delicious xml2 linkchecker
-1
Up
Down
check your up to date delicious links.

This commands queries the delicious api then runs the xml through xml2, grabs the urls cuts out the first two columns, passes through uniq to remove duplicates if any, and then goes into linkchecker who checks the links. the links go the blacklist in ~/.linkchecker/blacklist. please see the manual pages for further info peeps. I took me a few days to figure this one out. I how you enjoy it. Also don't run these api more then once a few seconds you can get banned by delicious see their site for info. ~updated for no recursive

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find . -name "*.php" -exec grep -il searchphrase {} \;
2010-01-16 05:09:30
User: unixmonkey7797
Functions: find grep
-1
Up
Down
Find all files containing a word

This is very similar to the first example except that it employs the 'exec' argument of the find command rather than piping the result to xargs. The second example is nice and tidy but different *NIXs may not have as capable a grep command.

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du -s * | sort -nr | head
2010-05-13 12:21:22
User: chenge
Functions: du sort
-1
Up
Down
identify big file

first 10 big file

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ffmpeg -r 12 -i img%03d.jpg -sameq -s hd720 -vcodec libx264 -crf 25 OUTPUT.MP4
2013-05-04 18:46:36
User: brainstorm
-1
Up
Down
Timelapse with ffmpeg (after symlinking pictures as per ffmpeg FAQ)
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find . -type f -exec grep -qi 'foo' {} \; -print0 | xargs -0 vim
2009-09-03 17:55:26
User: arcege
Functions: find grep xargs
Tags: vim find grep
-1
Up
Down
Edit all files found having a specific string found by grep

Make sure that find does not touch anything other than regular files, and handles non-standard characters in filenames while passing to xargs.

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