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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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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
curl -s http://api.wunderground.com/auto/wui/geo/ForecastXML/index.xml?query=${@:-<YOURZIPORLOCATION>}|xmlstarlet sel -E utf-8 -t -m //forecast/txt_forecast/forecastday -v fcttext -n
alias kfire='for i in `ps aux | grep [F]irefox `; do echo $i; kill $(($i)); done; '
2010-12-27 01:47:58
User: swerve
Functions: alias echo grep kill
-2

This is an attempt to get a command which I can alias. It's ugly but it works. I'm hoping someone can suggest a cleaner version.

I have tried....

# alias kfire="for i in $( ps aux | grep [F]irefox | awk \'{print $2}\' ); do kill $; done"

# alias kfire=`kill $(ps aux | grep [F]irefox | awk '{print $2}' | tr '\n' ' ')`

# alias kfire='ps au | grep -i [F]irefox | awk \'{ print $2 \'} '

and they all fail in a .bashrc I've tried escaping the quotes and can't find a way to make the single quotes ' that awk wants work. Maybe I'm just stubborn but I don't want to put in a little #!/bin/bash file just so I can kill a firefox process all in one stroke. This script works (it kills the process before it errors out)... it's just ugly and there may be a pretty way to do this.

cat urls.txt | xargs -n1 curl -O --max-time 10 --retry 3 --retry-delay 1
melt dvgrab-010.m2t meta.attr.titles=1 meta.attr.titles.markup=#timecode# -attach data_show dynamic=1
find / -name \*string\*
2009-02-16 08:43:01
User: tini
Functions: find
-2

run as root and use it fo find file you're looking for.

watch -tn1 'bc<<<"`date -d'\''friday 21:00'\'' +%s`-`date +%s`"|perl -ne'\[email protected]=gmtime($_);printf("%dd %02d:%02d:%02d\n",@p[7,2,1,0]);'\'
2009-03-29 19:53:36
User: penpen
Functions: perl watch
Tags: Linux unix date
-2

An improved version of http://www.commandlinefu.com/commands/view/1772/simple-countdown-from-a-given-date that uses Perl to pretty-print the output. Note that the GNU-style '--no-title' option has been replaced by its one-letter counterpart '-t'.

:set ic
2013-10-03 09:45:28
User: andreisid
-2

After the option is set, you can use / to search strings(case insensitive)

netstat -alpn | grep :80 | awk '{print $4}' |awk -F: '{print $(NF-1)}' |sort | uniq -c | sort -n
removedir () { echo "Deleting the current directory $PWD Are you sure?"; read human; if [[ "$human" = "yes" ]]; then blah=$(echo "$PWD" | sed 's/ /\\ /g'); foo=$(basename "$blah"); rm -Rf ../$foo/ && cd ..; else echo "I'm watching you" | pv -qL 10; fi; }
2010-01-17 11:34:38
User: oshazard
Functions: basename cd echo read rm sed
-2

CHANGELOG

Version 1.1

removedir () { echo "You are about to delete the current directory $PWD Are you sure?"; read human; if [[ "$human" = "yes" ]]; then blah=$(echo "$PWD" | sed 's/ /\\ /g'); foo=$(basename "$blah"); rm -Rf ../$foo/ && cd ..; else echo "I'm watching you" | pv -qL 10; fi; }

BUG FIX:

Folders with spaces

Version 1.0

removedir () { echo "You are about to delete the current directory $PWD Are you sure?"; read human; if [[ "$human" = "yes" ]]; then blah=`basename $PWD`; rm -Rf ../$blah/ && cd ..; else echo "I'm watching you" | pv -qL 10; fi; }

BUG FIX:

Hidden directories (.dotdirectory)

Version 0.9

rmdir () { echo "You are about to delete the current directory $PWD. Are you sure?"; read human; if [[ "$human" = "yes" ]]; then blah=`basename $PWD`; rm -Rf ../$blah/ && cd ..; else echo "I'm watching you" | pv -qL 10; fi; }

Removes current directory with recursive and force flags plus basic human check. When prompted type yes

1. [[email protected] ~]$ ls

foo bar

2. [[email protected] ~]$ cd foo

3. [[email protected] foo]$ removedir

4. yes

5. rm -Rf foo/

6. [[email protected] ~]$

7. [[email protected] ~]$ ls

bar

dir="/bin"; man $(ls $dir |sed -n "$(echo $(( $RANDOM % $(ls $dir |wc -l | awk "{ print $1; }" ) + 1 )) )p")
2010-08-20 16:31:50
User: camocrazed
Functions: dir ls man sed
Tags: man sed awk echo wc
-2

Broaden your knowledge of the utilities available to you in no particular order whatsoever! Then use that knowledge to create more nifty one-liners that you can post here. =p

Takes a random number modulo the number of files in $dir, prints the filename corresponding to that number, and passes it as an argument to man.

cat > file_name
2012-03-27 11:38:09
Functions: cat
-2

Write script or commands in notepad/Editplus/MS word etc, copy the contents, type the above command and click on enter now, paste by right click-ing the mouse. Entire contents in the clip-board gets pasted now again click on Enter to go to new line/next line. Press Ctrl+D to close/save the file. Not always required to vi to create a new file.

kinit username
man $(ls /bin | sed -n $((RANDOM % $(ls /bin | wc -l) + 1))p)
2010-08-20 17:15:33
User: putnamhill
Functions: ls man sed wc
Tags: man sed ls wc random
-2

Great idea camocrazed. Another twist would be to display a different man page based on the day of the year. The following will continuously cycle through all man pages:

man $(ls /bin | sed -n $(($(date +%j) % $(ls /bin | wc -l)))p)
yes n | cp something toSomeWhereElse
for f in *;do case "$(echo $f|sed "s/.*\.\([a-z\.]*\)/\1/g")" in zip)unzip -qqo $f&&rm $f;;tar.gz|tar.bz2)tar xf $f&&rm $f;;rar)unrar e -o+ -r -y $f&&rm $f;;7z)7z e -qqo $f;;esac;done
2009-08-17 03:50:50
User: matthewbauer
-2

This will unarchive the entire working directory. Good for torrents (I don't know why they put each file into a seperate archive).

/Applications/Google\ Chrome.app/Contents/MacOS/Google\ Chrome --proxy-server=socks5://HOST:PORT
curl -Ls "http://support.dell.com/support/DPP/Index.aspx?c=us&cs=08W&l=en&s=biz&ServiceTag=$(dmidecode -s system-serial-number)"|egrep -i '>Your Warranty<|>Product Support for'|html2text -style pretty|egrep -v 'Request|View'|perl -pane 's/^(\s+|\})//g;'
2011-02-18 22:29:05
User: din7
Functions: egrep perl
-2

The dates in the output are Start Date, End Date, Days Remaining in warranty, respectively. This will only work if you are running it on a dell machine. You can substitute the dmidecode command with a service tag if you are not using a dell. Also, you have to either allow your user to run sudo dmidecode with no password or run this command as root.

curl -s http://checkrealip.com/ | grep "Current IP Address" | cut -d ' ' -f 4
:rm 1
_llines=100; while [ $_llines -gt 1 ]; do echo $_llines; _llines=$(($_llines-1)); done
2009-04-29 00:19:45
User: romulusnr
Functions: echo
-2

You've opened a terminal window and you've connected off to a remote host that didn't pick up your terminal size, and all your curses and paging apps are screwed up as a result. You need to quickly determine how many lines are in your current terminal view (to feed into "stty rows X").

diff -qr /dirA /dirB
mount -o auto -t ntfs /dev/hda1 /windows
2009-02-16 10:45:06
User: RonaldConco
Functions: mount
-2

if the command is successful , you will get no output - only if an error has occurred will there be output

video=$(ls /tmp | grep -e Flash\w*); ffmpeg -i /tmp/$video -f mp3 -ab 192k ~/ytaudio.mp3
find . -name '*.txt' | grep -v '\.lzma$' | xargs -n 1 lzma -f -v -3
rm **/*.htm
2010-11-25 17:28:55
Functions: rm
Tags: find rm
-2

expands through shell and not find

but may hits the limit of max argument size for rm

(thus: for f in **/*.htm;do rm $f;done

but then I prefer the find command ;)