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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 - 12,378 results
alias ?=concalc
2014-01-02 01:46:44
User: boynux
Functions: alias

Same functionality without using bash functions.

echo 1395767373016 | gawk '{print strftime("%c", ( $0 + 500 ) / 1000 )}'
jshon -e addons -a -e defaultLocale -e name -u < ~/.mozilla/firefox/*.[dD]efault/extensions.json
zgrep 'pattern' /var/logs/apache2/access.log* | awk '{print $7}' | sort -n | uniq -c | sort -rn
find DIR -name "FILE" -exec grep -IHn STRING {} \;
ipconfig getpacket en0 | grep yi| sed s."yiaddr = "."en0: ". ipconfig getpacket en1 | grep yi| sed s."yiaddr = "."en1: ".
grep -ir 'foo' * | awk -F '{print $1}' | xargs vim
setterm -bfreq 0
2009-11-16 17:34:39
User: mvrilo
Functions: setterm
Tags: bell speaker beep

or change the frequency of the beep

2010-01-15 04:03:11
User: bhepple
Functions: wait

If you really _must_ use a loop, this is better than parsing the output of 'ps':

PID=$! ;while kill -0 $PID &>/dev/null; do sleep 1; done

kill -0 $PID returns 0 if the process still exists; otherwise 1

rec -r 44100 -p | sox -p "audio_name-$(date '+%Y-%m-%d').ogg" silence -l 1 00:00:00.5 -45d -1 00:00:00.5 -45d
2011-02-17 08:55:01
User: FuFighter
Tags: record

Very useful for recording radio scanner for instance as the resulting audio file contains only audio signal that exceeds -45dB and the file name tells you when the recording was done.

Why waste time listening silence? ;)

while [$((or_sz=$(stat -c %s "$1"))) -gt $((ds_sz=$(stat -c %s "$2")))];do ((pct=(69*$ds_sz)/$or_sz));echo -en "\r[";for ((i=1;i<=pct;i++));do echo -n "=";done;echo -n \>;for ((i=pct;i<=68;i++));do echo -n ".";done;echo -n "] $(((100*$pct)/69))%";done
2011-07-29 17:41:56
User: ScriptFanix
Functions: echo stat

Cleaner, but probably less portable. Works with bash4 and should also work on bash3.

IIRC, $(()) and (()) are bashisms, not POSIX.

zcat /usr/share/man/man1/man.1.gz | nroff -man | less
2011-09-07 01:13:57
User: atoponce
Functions: zcat
Tags: man less zcat nroff

As odd as this may be, I know of servers where the man(1) command is not installed, and there is not enough room on / to install it. However, zcat(1), nroff(1) and less(1) are. This is a way to read those documents without the proper tool to do so, as sad as this may seem. :)

diff -u <(ssh -t [email protected] sudo cat /dir1/file1) <(ssh -t [email protected] sudo cat /dir2/file2)
A=$(ip addr show dev eth0); A=${A##*inet }; echo ${A%%/*}
2013-03-13 23:07:37
User: charley
Functions: echo

bash only - no grep, sed, awk, whatever - zero overhead

alternatively using ifconfig instead of "ip addr ..."

A=$(ifconfig eth0); A=${A##*inet addr:}; echo ${A%% *}

rsync -arvx --numeric-ids --stats --progress --bwlimit=1000 file server:destination_directory
2013-10-01 13:00:59
Functions: file rsync
Tags: Linux rsync

Useful for transferring large file over a network during operational hours

mysqldump --force -uUSER -pPASS PRODUCTION_DB | mysql -uUSER -pPASS COPY_DB
2014-01-02 19:04:50
User: bones

this command uses mysqldump to dump the production database and pipe it directly to the copy-database

xxd -l 20 -c 20 -p /dev/urandom
2014-03-26 09:44:04
User: jt
Tags: password

Dumps 20 bytes from /dev/urandom and converts them to hex. -c and -p are needed to prevent splitting over lines.

sed -n '/url/s#^.*url=\(.*://.*\)#\1#p' ~/.mozilla/firefox/*.[dD]efault/SDBackups/*.speeddial | sort | uniq
2015-02-17 20:56:28
User: return13
Functions: sed sort

For all users of https://addons.mozilla.org/de/firefox/addon/speed-dial/

write user anytext
watch --no-title -d -n 1 'echo `date -d "next Thursday" +%s` "-" `date +%s` | bc -l'
2009-03-29 06:53:09
User: jnash
Functions: bc watch

Might be more useful if you were able to print it in Days HH:MM:SS format as:

perl -e [email protected]=gmtime(234234);printf("%d Days %02d:%02d:%02ds\n",@p[7,2,1,0]);'

But I'm not exactly sure how to replace the 234234 with the output of the countdown time. (Having some problems with nested quoting/command substitution). Help would be appreciated :)

vim ~/.purple/pounces.xml
2009-04-28 19:11:39
Functions: vim
Tags: vim pidgin

So you keep getting buzzes sounding from pidgin but you can't remember which buddy pounce is causing the beep. Well, cat/edit the ~/.purple/pounces and find out!

ls -t1 | head -n1 | xargs tail -f
find / -type f -size +512000 | xargs ls -lh | awk '{ print $5 " " $6$7 ": " $9 }'
2010-05-12 17:21:12
User: johnss
Functions: awk find ls xargs

This is an updated version that some one provided me via another "find" command to find files over a certain size. Keep in mind you may have to mess around with the print values depending on your system to get the correct output you want. This was tested on FC and Cent based servers. (thanks to berta for the update)

wmic process list IO
2010-08-20 11:05:34
User: glaudiston

there's some options, see more details in :

wmic /?

wmic process /?

wmic process list /?