All commands sorted by votes

All commands (14,187)

sorted by

show mysql process ids

Show Sample Output
This is sample output - yours may be different.
```
2
3131
3210
5633
6032
6061
6375
6588
6772
7092
7499
7663
```
0

mysql -s -e "show processlist" |awk '{print $1}'

aravind040 · 2009-05-27 07:22:05 5
Search for specific IPs taken form a text file within the apache access log

bnd-ips.txt is a list of IP adresses that is concenated for use as regular expression. Yes, this is still very speedy ;=)
This is sample output - yours may be different.
0

grep -E ":(`cat bnd-ips.txt | sed 's/\./\\./g' | tr '\n' '|'`)" access.log

Cowboy · 2009-07-30 12:54:55 6
Visualizing system performance data

draw `vmstat ` data using gnuplot
This is sample output - yours may be different.
0

vmstat 2 10 | awk 'NR > 2 {print NR, $13}' | gnuplot -e "set terminal png;set output 'v.png';plot '-' u 1:2 t 'cpu' w linespoints;"

Sunng · 2009-09-23 07:19:47 3
Search pattern case insensitive
This is sample output - yours may be different.
0

:/\c{pattern}

yohananov · 2010-03-22 11:23:08 3
List file/directories in order of last accessed, in human readable terms

Especially useful with a command line podcatcher like Mashpodder. Show Sample Output
This is sample output - yours may be different.
```
drwxr-xr-x 2 mark users 4.0K Mar 29 23:01 LottaLinuxLinks
drwxr-xr-x 2 mark users 4.0K Mar 29 21:53 x11r5Radio
drwxr-xr-x 2 mark users 4.0K Mar 29 21:53 TLLTS
drwxr-xr-x 2 mark users 4.0K Mar 29 21:53 Linux.Outlaws.Ogg
```
0

ls -lth podcasts/

ricemark20 · 2011-03-30 18:47:02 3
Quick enter into a single screen session
This is sample output - yours may be different.
0

alias screenr='screen -r $(screen -ls | egrep -o -e '[0-9]+' | head -n 1)'

yababay · 2011-05-12 05:44:39 5
Power cd - Add a couple of useful features to 'cd'

Move efficiently between directories. . This command adds a couple of extra features to cd, without affecting normal use. CDPATH use is also unaffected. It introduces and environment variable CDDIR which is used as an alternate home directory. . Note: I don't want to alter $HOME because then all my dot files will move. . Examples: . cd dir Change directory to "dir" (using CDPATH if necessary) . cd dir/file.txt Change directory to "dir" (containing folder of "file.txt") This allows you to cut'n'paste, or use . CDDIR is unset cd Change directory to $HOME . CDDIR=/home/flatcap/work cd Change directory to /home/flatcap/work . For convenience, put the command, and the following, in your .bashrc or .bash_profile export CDDIR="/home/flatcap/work" alias cdd="CDDIR=$(pwd)" Show Sample Output
This is sample output - yours may be different.
```
~$ export CDDIR=/home/flatcap/work
~$ cd
~/work$ unset CDDIR
~/work$ cd
~$
```
0

cd() { if [ -n "$1" ]; then [ -f "$1" ] && set -- "${1%/*}"; else [ -n "$CDDIR" ] && set -- "$CDDIR"; fi; command cd "$@"; }

flatcap · 2011-06-24 08:48:13 10
find broken symbolic links

find broken symbolic links Show Sample Output
This is sample output - yours may be different.
```
lrwxrwxrwx 1 nobody nobody 43 2010-03-15 13:00 /mnt/retorn -> /opt/retorn
```
0

find . -type l | (while read FN ; do test -e "$FN" || ls -ld "$FN"; done)

pathcl · 2011-08-02 14:48:47 5
Upload documents from linux to MS SHarepoint using curl

Use Curl to upload documents from your linux servers to MS Sharepoint servers.
This is sample output - yours may be different.
0

curl --ntlm -u <your Active-Directory-Domain>/<your-domain-username> -T /path/to/local/$FILE http://sharepoint.url.com/doc/library/dir/

barnesmjsa · 2011-09-08 18:08:58 3
Push to all remote repos with git
This is sample output - yours may be different.
0

git remote | xargs -n 1 git push

rickard2 · 2012-02-11 17:41:52 3
pdftk append with handles
This is sample output - yours may be different.
0

pdftk A=1.pdf B=2.pdf C=3.pdf cat C A output CA.pdf

bossNova · 2012-03-28 15:41:44 22
List all symlinks and see where they link to
This is sample output - yours may be different.
0

find -type l | xargs ls -l

samer · 2012-05-15 22:34:51 3
Find the 10 lusers winners of the "I take up the most disk space" award

the -h option of du and sort (on appropriate distrib) makes output "Human" readable and still sorted by "reversed size" (sort -rh) Show Sample Output
This is sample output - yours may be different.
```
55G	/home/user32
19G	/home/user45
6.7G	/home/user89
16M	/home/user02
64K	/home/user57
```
0

du -sh /home/*|sort -rh|head -n 10

toaster · 2012-09-12 11:54:06 5
avoid ssh hangs using jobs

Execute commands serially on a list of hosts. Each ssh connection is made in the background so that if, after five seconds, it hasn't closed, it will be killed and the script will go on to the next system. Maybe there's an easier way to set a timeout in the ssh options...
This is sample output - yours may be different.
0

for host in $MYHOSTS; do ping -q -c3 $H 2>&1 1>/dev/null && ssh -o 'AllowedAuthe ntications publickey' $host 'command1; command2' & for count in 1 2 3 4 5; do sleep 1; jobs | wc -l | grep -q ^0\$ && continue; done; kill %1; done

a8ksh4 · 2012-11-13 23:12:27 5
Go get those photos from a Picasa album (full size)
This is sample output - yours may be different.
0

wget -O - "[PICASA ALBUM RSS LINK]" |sed 's/</\n</g' | grep media:content |sed 's/.*url='"'"'$[^'"'"']*$'"'"'.*$/\1/' |awk -F'/' '{gsub($NF,"d/"$NF); print $0}'|wget -i -

mxac · 2013-03-16 15:48:41 4
vi show line numbers

Prints line numbers making it easier to see long lines that wrap in your terminal and extra line breaks at the end of a file. :set nu works too. Show Sample Output
This is sample output - yours may be different.
```
1 sample text file
2 blah blah blah
3 last line
4
```
0

:set number

sonic · 2013-10-07 15:03:52 6
Remove all .DS_Store files from the current directory (recursive)

May require GNU find.
This is sample output - yours may be different.
0

find . -name "*.DS_Store" -type f -delete

nicolasmccurdy · 2014-07-16 02:03:38 8
This command uses dd, pv, and dialog command to display an updated progress bar while using the dd command. This is useful to see the status of a dd in progress when creating very large dumps or coping hard disk devices using dd command.
This is sample output - yours may be different.
0

(pv -n /dev/sda | dd of=/dev/sdb bs=128M conv=notrunc,noerror) 2>&1 | dialog --gauge "Running dd command (cloning), please wait..." 10 70 0

skinners · 2014-11-07 16:24:26 13
function: permanent alias

Yes, it is not a command. Yes, you need to add it to your init script. Yes, you need to define $SH_ALIASES filename. But this shit can be very useful.
This is sample output - yours may be different.
0

function cmd () {echo 'alias '$1'="'${@:2}'"' >> $SH_ALIASES; . $SH_ALIASES }; . $SH_ALIASES;

romgrk · 2015-06-28 21:21:52 9
Diff two directories by finding and comparing the md5 checksums of their contents.

Results will be shown in columns. Only different files and files in one directory that is not in the other will be shown.
This is sample output - yours may be different.
0

diff -y --suppress-common-lines <(sort -k2 <(md5deep -r -b directory1)) <(sort -k2 <(md5deep -r -b directory2))

MeLoPasoPipa · 2016-08-18 09:17:16 12
Make color transparent
This is sample output - yours may be different.
0

mogrify -path ../png_transparent/ -fuzz 3.4% -transparent "#50566b" *.png

ceddi · 2016-10-17 19:49:04 17
Display which distro is installed

Cleaner than the top alternative Show Sample Output
This is sample output - yours may be different.
```
Distributor ID:	Debian
Description:	Debian GNU/Linux 8.7 (jessie)
Release:	8.7
Codename:	jessie
```
0

test `uname` = Linux && lsb_release -a 2>/dev/null || ( test `uname` = SunOS && cat /etc/release || uname -rms )

amhhhhhhh · 2017-04-25 13:35:40 21
Silently Execute a Shell Script that runs in the background and won't die on HUP/logout
This is sample output - yours may be different.
0

(nohup your-command your-args &>/dev/null &)

socketz · 2018-05-23 17:35:43 197
Force file system check
This is sample output - yours may be different.
0

touch /forcefsk

rimaya · 2009-02-06 09:19:46 11
Merge ( directories [looking for improvement]

Using a GUI file managers you can merge directories (cut and paste). This command roughly does the same (it doesn't ask for confirmation (no problem for me) and it doesn't clean up the empty SRC directories (no problem, trivial). probably does the same: cp -l SRC TARGET; rm -rf SRC
This is sample output - yours may be different.
0

(cd SRC; find . -type d -exec mkdir TARGET/{} ";"; find . -type f -exec mv {} TARGET/{} ";")

karel1980 · 2009-08-17 12:35:48 11
‹ First < 461 462 463 464 465 > 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

Extract JPEG images from a PDF document

This will extract all DCT format images from foo.pdf and save them in JPEG format (option -j) to bar-000.jpg, bar-001.jpg, bar-002.jpg, etc. Inspired by http://stefaanlippens.net/extract-images-from-pdf-documents

Get AWS temporary credentials ready to export based on a MFA virtual appliance

You might want to secure your AWS operations requiring to use a MFA token. But then to use API or tools, you need to pass credentials generated with a MFA token. This commands asks you for the MFA code and retrieves these credentials using AWS Cli. To print the exports, you can use: `awk '{ print "export AWS_ACCESS_KEY_ID=\"" $1 "\"\n" "export AWS_SECRET_ACCESS_KEY=\"" $2 "\"\n" "export AWS_SESSION_TOKEN=\"" $3 "\"" }'` You must adapt the command line to include: * $MFA_IDis ARN of the virtual MFA or serial number of the physical one * TTL for the credentials

Find usb device in realtime

Using this command you can track a moment when usb device was attached.

list file descriptors opened by a process

Useful for examining hostile processes (backdoors,proxies)

Monitor dynamic changes in the dmesg log.

Other logs can be monitored similarly, e.g. $ watch "tail -15 /var/log/daemon.log"

Add a progress counter to loop (see sample output)

For this hack you need following function: $ finit() { count=$#; current=1; for i in "$@" ; do echo $current $count; echo $i; current=$((current + 1)); done; } and alias: $ alias fnext='read cur total && echo -n "[$cur/$total] " && read' Inspired by CMake progress counters.

Convert multiple files using avidemux

Using avidemux to convert multiple files that are in the folder where the command was executed.

Which processes are listening on a specific port (e.g. port 80)

swap out "80" for your port of interest. Can use port number or named ports e.g. "http"

follow the content of all files in a directory

The `-q' arg forces tail to not output the name of the current file

Unbelievable Shell Colors, Shading, Backgrounds, Effects for Non-X

I've been using linux for almost a decade and only recently discovered that most terminals like putty, xterm, xfree86, vt100, etc., support hundreds of shades of colors, backgrounds and text/terminal effects. This simply prints out a ton of them, the output is pretty amazing. If you use non-x terminals all the time like I do, it can really be helpful to know how to tweak colors and terminal capabilities. Like: $ echo $'\33[H\33[2J'

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