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commandlinefu.com is the place to record those command-line gems that you return to again and again.

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May 19, 2015 - A Look At The New Commandlinefu
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All commands from sorted by
Terminal - All commands - 12,353 results
mencoder -ovc copy -nosound ./movie.mov -o ./movie_mute.mov
2009-05-17 11:56:22
User: angleto
2

create a copy of a video file without the audio tracs

find . -name \*.mp3 -printf "%C+ %h/%f\n" | sort -r | head -n20 | awk '{print "\""$2"\""}' | xargs -I {} cp {} ~/tmp
2009-05-17 07:06:10
User: bkinsey
Functions: awk cp find head sort xargs
2

Change ~/tmp to the destination directory, such as your mounted media. Change -n20 to whatever number of files to copy. It should quit when media is full. I use this to put my most recently downloaded podcasts onto my phone.

lsb_release -a
2009-05-17 02:49:18
User: Vasudev
-7

Get the complete distro information from shell prompt like distributor ID,code name etc.

for d in `find .. -mindepth 1 -maxdepth 1 -type d | sort`; do if [[ `basename $d` > `basename $PWD` ]]; then cd $d; break; fi; done
2009-05-16 17:33:34
User: gwiener
Functions: cd
4

Sometimes you have to browse your way through a lot of sub-directories. This command cd to the next sub-directory in alphabetical order. For example, if you have the directories "lectures/01-intro", "lectures/02-basic", "lectures/03-advanced" and so on, and your PWD is "02-basic", it jumps to "03-advanced".

while true; do cat /usr/src/linux/kernel/signal.c > /dev/dsp; done
2009-05-16 14:44:57
Functions: cat
1

replace "/usr/src/linux/kernel/signal.c" with any file you want and listen to its output ! :P

you can also replace "cat" with "echo" or anything you can come up with

have fun :-}

find . -name '*.m4a' | xargs -I audiofile mplayer -ao pcm "audiofile" -ao pcm:file="audiofile.wav"
find /var -mount -ls -xdev | /usr/bin/sort -nr +6 | more
zpool create tank /path/to/file/a /path/to/file/b
2009-05-16 10:46:17
User: mnikhil
Tags: zfs zpool
-2

This command creates an unmirrored pool using

files. While not recommended, a pool based on files can be

useful for experimental purposes.

zpool create tank mirror c0t0d0 c0t1d0 mirror c0t2d0 c0t3d0
2009-05-16 10:44:56
User: mnikhil
Tags: zfs zpool
-2

command creates a pool with two mirrors, where each mirror contains two disks.

zpool create tank raidz c0t0d0 c0t1d0 c0t2d0 c0t3d0 c0t4d0 c0t5d0
2009-05-16 10:44:05
User: mnikhil
-2

The following command creates a pool with a single raidz root vdev that consists of six disks.

mencoder dvd://1 -aid 128 -o track-1.avi -oac copy -ovc lavc -lavcopts vcodec=mpeg4
2009-05-16 00:08:57
User: dstahlke
2

Substitute whatever track number you want into the "dvd://1" parameter. The "-aid 128" is to select the English language.

/sbin/dumpe2fs /dev/hda2 | grep 'Block size'
2009-05-15 22:23:21
User: rez0r
Functions: grep
Tags: size output block
0

Useful to know, especially if you are dealing with output configurations in block size.

Tested on 'Red Hat'.

curl -u USER:PASS -d status="NEW STATUS" http://identi.ca/api/statuses/update.xml
2009-05-15 19:57:00
4

identica is an open source social networking and micro-blogging service. Based on Laconica, a micro-blogging software package built on the OpenMicroBlogging specification.

http://identi.ca/

psql -U postgres -lAt | gawk -F\| '$1 !~ /^template/ && $1 !~ /^postgres/ && NF > 1 {print $1}'
gtar cpf - . | (cd /dest/directory; gtar xpf -)
2009-05-15 13:23:00
User: mnikhil
Functions: cd
Tags: gtar, gtar
1

It copies the entire current working directory to the destination directory with compression enabled.

mkdir `date --iso`
2009-05-15 12:30:10
User: hal
Functions: mkdir
3

Create a directory named with the current date in ISO 8601 format (yyyy-mm-dd). Useful for storing backups by date. The --iso switch may only work with GNU date, can use format string argument for other date versions.

svn log | grep "bodge\|fudge\|hack\|dirty"
2009-05-15 09:55:44
User: root
Functions: grep
-4

A good way to understand what you've let yourself in for. Potential project metric could be the count:

svn log | grep -c "bodge\|fudge\|hack\|dirty"
ffmpeg -i <filename>.flv -vn <filename>.mp3
$ mplayer -dumpaudio -dumpfile <filename>.mp3 <filename>.flv
clfu-seach <search words>
svn st | grep '^\?' | awk '{print $2}' | xargs svn add; svn st | grep '^\!' | awk '{print $2}' | xargs svn rm
2009-05-14 14:34:50
User: stedwick
Functions: awk grep xargs
0

automatically add and remove files in subversion so that you don't have to do it through the annoying svn commands anymore

find . -name "\.svn" -exec rm -rf {} ";"
curl -s http://checkip.dyndns.org/ | grep -o "[[:digit:].]\+"
sudo pmset schedule sleep "08/31/2009 00:00:00"
2009-05-14 09:31:32
User: hobzcalvin
Functions: sleep sudo
4

Schedule your Mac to sleep at any future time.

Also wake, poweron, shutdown, wakeorpoweron. Or repeating with

sudo pmset repeat wakeorpoweron MTWRFSU 7:00:00

Query with

pmset -g sched

Lots more at http://www.macenterprise.org/articles/powermanagementandschedulingviathecommandline

alt + 1 .
2009-05-14 09:14:01
User: elementa13
9

alt + number + dot will insert last command argument at $number place, alt + 0 + . will print last command name. For example

ls /tmp /var ls /usr /home

alt + 1 + . will result in '/usr' , if you press alt + . again, it will result in '/tmp'

alt + 0 + . -> 'ls'