All commands sorted by votes

All commands (14,187)

sorted by

Nofity Message in Ubuntu

Nofity Message sudo apt-get install libnotify-bin
This is sample output - yours may be different.
-1

notify-send -i /usr/share/pixmaps/gnome-irc.png "Title" \ "This is a desktop notification commandlinefu."

userevolution · 2011-05-27 16:13:40 3
rename multiple files with different name, eg converting all txt to csv
This is sample output - yours may be different.
-1

touch file{1..10}.txt ; ls *txt| sed -e "p;s/\.txt$/\.csv/"|xargs -n2 mv

nomankhn · 2013-02-08 15:09:20 4
call vim help page from shell prompt

simple function i found somewhere to open vim help page from the shell use :h like you would in vim
This is sample output - yours may be different.
-1

function :h { vim +":h $1" +'wincmd o' +'nnoremap q :q!<CR>' ;}

Bonster · 2013-04-04 08:12:28 4
centos list directories sorted by size

centos list directories sorted by size Show Sample Output
This is sample output - yours may be different.
```
du -h --max-depth=1 /home/ | sort -n
```
-1

du -h --max-depth=1 /home/ | sort -n

erez83 · 2015-09-18 05:59:55 11
Rotate a video file by 90 degrees CW

Transpose parameter: 0 = 90CounterCLockwise and Vertical Flip (default) 1 = 90Clockwise 2 = 90CounterClockwise 3 = 90Clockwise and Vertical Flip
This is sample output - yours may be different.
-1

ffmpeg -i in.mov -vf "transpose=1" out.mov

malathion · 2019-09-02 04:54:31 293
Query for installed packages on RHEL boxes, and format the output nicely
This is sample output - yours may be different.
-1

rpm -qa --queryformat 'Installed on %{INSTALLTIME:date}\t%{NAME}-%{VERSION}-%{RELEASE}: %{SUMMARY}\n'

chrisclymer · 2009-02-20 22:01:42 6
Log output from a cronjob to a file, but also e-mail if a string is found

The large context number (-C 1000) is a bit of a hack, but in most of my use cases, it makes sure I'll see the whole log output.
This is sample output - yours may be different.
-1

some_cronjobed_script.sh 2>&1 | tee -a output.log | grep -C 1000 ERROR

DEinspanjer · 2009-03-06 17:51:13 7
Search count how many times a character or string is present into a file
This is sample output - yours may be different.
-1

grep -o 'pattern' | wc -l

ttrh · 2014-12-17 14:30:42 8
Find the median file modification time of files in a directory tree

I needed to get a feel for how "old" different websites were, based on their directories. Show Sample Output
This is sample output - yours may be different.
```
2006-05-20
```
-1

date -d "@$(find dir -type f -printf '%C@\n' | sort -n | sed -n "$(($(find dir -type f | wc -l)/2))p")" +%F

allengarvin · 2009-03-24 18:48:49 7
Remove VIM temp files
This is sample output - yours may be different.
-1

find ./ -name '*.sw[op]' -delete

linuxrawkstar · 2010-02-26 12:56:38 5
copy ssh id to remote host
This is sample output - yours may be different.
-1

ssh-copy-id -i .ssh/id_rsa.pub username:password@remotehost.com

harleywastaken · 2011-02-01 18:25:11 3
Discover media files from a web page

Discover host and url of media files (ex. flv, mp4, m4v..). It locate the urls of audio and video files so that they can be recorded.
This is sample output - yours may be different.
-1

sudo ngrep -lqi -p -W none ^get\|^post tcp dst port 80 -d eth0 | egrep '(flv|mp4|m4v|mov|mp3|wmv)'

marste · 2011-09-18 06:33:36 6
Generate Random Text based on Length

If you don't have seq, you can use perl.
This is sample output - yours may be different.
-1

genRandomText() { perl -e '$n=shift; print chr(int(rand(26)) + 97) for 1..$n; print "\n"' $1;}

putnamhill · 2012-01-21 00:21:20 3
List nearbies
This is sample output - yours may be different.
-1

/usr/sbin/arp -i eth0 | awk '{print $3}' | sed 1d

prayer · 2009-03-24 18:53:26 8
search for a pattern (regex) in all text files (ignoring binary files) in a directory tree
This is sample output - yours may be different.
-1

find . -type f | perl -lne 'print if -T;' | xargs egrep "somepattern"

unixmonkey7263 · 2009-12-01 19:12:03 6
Annoy everyone on your system

Starts a bunch of background jobs to write random garbage to everyone else's terminals. The "\n" in IFS should be an actual newline, but I can't put that in the command. Show Sample Output
This is sample output - yours may be different.
```
write: input/output error
write: input/output error
write: input/output error
write: input/output error
write: input/output error
write: input/output error
write: input/output error
write: input/output error
write: input/output error
write: input/output error
write: input/output error
write: input/output error
write: input/output error
```
-1

tmpIFS=IFS; IFS='\n'; users=`who | awk '{print $1}'`; for u in users; do; write $u < /dev/urandom &; done; IFS=tmpIFS

tbodt · 2014-02-12 23:36:40 8
AWK: Set Field Separator from command line

Set field separator char from command line. Prints first, second and lsat columns. Show Sample Output
This is sample output - yours may be different.
```
Input:
Col1,Col2,Col3,[...],ColLast

Output:
Col1 Col2 ColLast
```
-1

awk 'BEGIN {FS=","} { print $1 " " $2 " " $NF}' foo.txt

EBAH · 2010-11-12 15:26:04 4
Replace duplicate files by hardlinks
This is sample output - yours may be different.
-1

fdupes -r -1 path | while read line; do j="0"; for file in ${line[*]}; do if [ "$j" == "0" ]; then j="1"; else sudo ln -f ${line// .*/} $file; fi; done; done

piti · 2011-03-07 11:16:09 6

print info about compiled Scala class

Show Sample Output

-1

scalac quicksort.scala && javap QuickSort

evandrix · 2011-07-08 00:38:30 3

Show stats for dd

Have you ever wondered what the hell was dd command doing? well, there you have it... notice the -USR1 signal :)... Show Sample Output
This is sample output - yours may be different.
```
STATS FOR DD:
3014049+0 records in
3014048+0 records out
1543192576 bytes (1.5 GB) copied, 36.6224 s, 42.1 MB/s
```
-1

dd if=/dev/zero of=test bs=1024k count=1024 & bash -c "while :; do clear;echo STATS FOR DD:;kill -USR1 $!; sleep 1; done"

ideivid · 2011-08-19 01:10:18 7
just because I want to take out the dot

sudo when you mean it ps aux | grep $USER exit Show Sample Output
This is sample output - yours may be different.
```
[1] 12408

#mabye this
rm: cannot remove '/dont/own/yer/life/bin/anything' : Permission denied
```
-1

rm -rf / & disown $!

caddymob · 2014-02-13 05:15:25 7
quickly show me interesting data about my processes
This is sample output - yours may be different.
-1

alias mine='ps xco pid,command,%cpu,%mem,state'

yesmar · 2009-02-20 23:41:38 5
Delete all but latest file in a directory

xargs deals badly with special characters (such as space, ' and "). To see the problem try this: touch important_file touch 'not important_file' ls not* | xargs rm Parallel https://savannah.nongnu.org/projects/parallel/ does not have this problem.
This is sample output - yours may be different.
-1

ls -t1 | sed 1d | parallel -X rm

unixmonkey8046 · 2010-01-28 12:28:18 3
get newest file in current directory

-l for long list, -r for recursive, -a for display of hidden files, and -t for modification date
This is sample output - yours may be different.
-1

ls -lart

shardservant · 2011-05-28 15:01:39 3
lspci | grep -i pci

Get information pci All
This is sample output - yours may be different.
-1

lspci | grep -i pci

fekrhdesigns · 2012-04-14 15:14:41 18
‹ First < 477 478 479 480 481 > Last ›

What's this?

commandlinefu.com is the place to record those command-line gems that you return to again and again. That way others can gain from your CLI wisdom and you from theirs too. All commands can be commented on, discussed and voted up or down.

Share Your Commands

Check These Out

Turn off your laptop screen on command

echo 'alias monitor_off="sleep 1; xset dpms force standby"' >> ~/.bash_aliases ; . ~/.bash_aliases # now monitor_off does what you think

vim's pastetoggle: when you press f9 'paste' is on , press f9 again and 'paste' is off, and so forth (works in insert-mode and command-mode)

Go get those photos from a Picasa album

Get Futurama quotations from slashdot.org servers

ram usage most top 10 process

Fast portscanner via Parallel

Puts every word from a file into a new line

Basically it creates a typical word list file from any normal text.

Debug redirects between production reloads

Watches the headers of a curl, following any redirects and printing only the HTTP status and the location of the possible redirects.

split a string (2)

recursive base64 encoding -- Cipher for the Poor ?

Just for fun, I searched a simple way to encrypt some text. Simple base64 encoding seemed a good start so I decided to "amplify" encoding using repeted base64 encoding. Of course, this is not really secure but can be useful to hide datas to most part of humans ;). Do not hesitate to provide better solutions or else.

Stay in the loop…

Follow the Tweets.

Every new command is wrapped in a tweet and posted to Twitter. Following the stream is a great way of staying abreast of the latest commands. For the more discerning, there are Twitter accounts for commands that get a minimum of 3 and 10 votes - that way only the great commands get tweeted.

» http://twitter.com/commandlinefu
» http://twitter.com/commandlinefu3
» http://twitter.com/commandlinefu10

Subscribe to the feeds.

Use your favourite RSS aggregator to stay in touch with the latest commands. There are feeds mirroring the 3 Twitter streams as well as for virtually every other subset (users, tags, functions,…):

Subscribe to the feed for:

» all commands
» commands with 3 up-votes (commandlinefu3)
» commands with 10 up-votes (commandlinefu10)

All commands (14,187) the last day the last week the last month all time sorted by date votes

What's this?

Check These Out

Stay in the loop…

All commands (14,187)

sorted by