All commands

All commands (14,187)

sorted by

Delete all lines after the first match
This is sample output - yours may be different.
0

sed -n -e '1,/match/p'

climatewarrior · 2009-06-03 16:33:43 6
Find chronological errors or bad timestamps in a Subversion repository

Lists revisions in a Subversion repository with a timestamp that doesn't follow the revision numbering order. If everything is OK, nothing is displayed.
This is sample output - yours may be different.
2

URL=http://svn.example.org/project; diff -u <(TZ=UTC svn -q log -r1:HEAD $URL | grep \|) <(TZ=UTC svn log -q $URL | grep \| | sort -k3 -t \|)

sunny256 · 2009-06-03 14:26:55 4
See smbstatus all the time

See smbstatus Output within a 5 second interval (for monitoring smb access)
This is sample output - yours may be different.
-4

while (( $i != 0 )) { smbstatus; sleep 5; clear }

unixmonkey4084 · 2009-06-03 13:26:30 9
Monitor logs in Linux using Tail

Works in Ubuntu, I hope it will work on all Linux machines. For Unixes, tail should be capable of handling more than one file with '-f' option. This command line simply take log files which are text files, and not ending with a number, and it will continuously monitor those files. Putting one alias in .profile will be more useful.
This is sample output - yours may be different.
6

find /var/log -type f -exec file {} \; | grep 'text' | cut -d' ' -f1 | sed -e's/:$//g' | grep -v '[0-9]$' | xargs tail -f

mohan43u · 2009-06-03 09:47:08 11
Show git branches by date - useful for showing active branches

Print out list of all branches with last commit date to the branch, including relative time since commit and color coding. Show Sample Output
This is sample output - yours may be different.
```
2009-06-03 12:21:35 +0900 3 hours ago	add_cool_functionality
2009-06-02 16:15:13 +0900 24 hours ago	remove_strange_bug
2009-06-02 16:12:20 +0900 24 hours ago	implement_observer
2009-06-02 14:42:58 +0900 25 hours ago	experiment_with_bobcat_feature
```
16

for k in `git branch|perl -pe s/^..//`;do echo -e `git show --pretty=format:"%Cgreen%ci %Cblue%cr%Creset" $k|head -n 1`\\t$k;done|sort -r

brunost · 2009-06-03 08:25:00 309
coloured tail

tail with coloured output with the help of perl - need more colours? here is a colour table: http://www.tuxify.de/?p=23 Show Sample Output
This is sample output - yours may be different.
```
well no colours here
```
17

tail -f FILE | perl -pe 's/KEYWORD/\e[1;31;43m$&\e[0m/g'

tuxifier · 2009-06-02 21:31:54 22
du disk top 10

fancy command line ncdu clone Show Sample Output
This is sample output - yours may be different.
```
67 MB used by /var/log
42 MB used by /var/log/gdm
9 MB used by /var/log/ConsoleKit
2 MB used by /var/log/munin
1 MB used by /var/log/kismet
1 MB used by /var/log/dist-upgrade
0 MB used by /var/log/apache2
0 MB used by /var/log/installer
0 MB used by /var/log/vmware
0 MB used by /var/log/cups
```
7

for i in `du --max-depth=1 $HOME | sort -n -r | awk '{print $1 ":" $2}'`; do size=`echo $i | awk -F: '{print $1}'`; dir=`echo $i | awk -F: '{print $NF}'`; size2=$(($size/1024)); echo "$size2 MB used by $dir"; done | head -n 10

tuxifier · 2009-06-02 21:27:48 8
Check version of DNS Server

Show Sample Output
This is sample output - yours may be different.
```
maggie:~ root# nslookup -q=txt -class=CHAOS version.bind NS.PHX5.NEARLYFREESPEECH.NET
Server:		NS.PHX5.NEARLYFREESPEECH.NET
Address:	208.94.116.129#53
version.bind	text = "9.3.4-P1"
```
0

nslookup -q=txt -class=CHAOS version.bind NS.PHX5.NEARLYFREESPEECH.NET

unixmonkey4063 · 2009-06-02 19:54:24 5
Archive every file in /var/logs
This is sample output - yours may be different.
0

find /var/logs -name * | xargs tar -jcpf logs_`date +%Y-%m-%e`.tar.bz2

unixmonkey4063 · 2009-06-02 19:48:47 6
Search for all files that begin with . and delete them.

Show Sample Output
This is sample output - yours may be different.
```
maggie:~ root# find ~/Desktop/ $ -regex '.*/\..*' $ -print -exec rm -Rf {} \;
~/Desktop/.DS_Store
~/Desktop/.fseventsd
```
-6

find ~/Desktop/ $ -regex '.*/\..*' $ -print -exec rm -Rf {} \;

unixmonkey4063 · 2009-06-02 19:45:06 8
Uncompress a CSS file

Ever compress a file for the web by replacing all newline characters with nothing so it makes one nice big blob? It is a great idea, however what about when you want to edit that file? ...Serious pain in the butt. I ran into this today in that my only copy of a CSS file was "compressed" with no newlines. I whipped this up and it converted back into nice human readable CSS :-) It could be nicer, but it does the job.
This is sample output - yours may be different.
1

cat somefile.css | awk '{gsub(/{|}|;/,"&\n"); print}' >> uncompressed.css

lrvick · 2009-06-02 15:51:51 37
resolve hostname to IP our vice versa with less output

inverted version: resolveip -s 216.34.181.xxx freshmeat.net Show Sample Output
This is sample output - yours may be different.
```
root@zappa:~/Music# resolveip -s www.freshmeat.net
216.34.181.xxx
```
1

resolveip -s www.freshmeat.net

ncaio · 2009-06-02 14:25:53 7
print random commandlinefu.com submission

ok I'm sure it's not pretty Show Sample Output
This is sample output - yours may be different.
```
Terminal - runs a bash script in debugging mode    
bash -x ./post_to_commandlinefu.sh
```
-2

lynx -source http://www.commandlinefu.com/commands/random | sed 's/<[^>]*>//g' | head -1037 | tail -10 | sed -e 's/^[ \t]*//' | sed '/^$/d' | head -2

lxtips · 2009-06-02 09:48:59 11
Get yesterday's date or a previous time

With this command you can get a previous or future date or time. Where can you use this? How about finding all files modified or created in the last 5 mins? touch -t `echo $(date -d "5 minute ago" "+%G%m%d%H%M.%S")` me && find . -type f -newer me List all directories created since last week? touch -t `echo $(date -d "1 week ago" "+%G%m%d%H%M.%S")` me && find . -type d -cnewer me I'm sure you can think of more ways to use it. Requires coreutils package. Show Sample Output
This is sample output - yours may be different.
```
Sun May 31 18:36:28 MYT 2009
Mon Jun  1 07:36:28 MYT 2009
Mon Jun  1 16:33:28 MYT 2009
Tue Jun  2 10:36:28 MYT 2009
```
5

date -d '1 day ago'; date -d '11 hour ago'; date -d '2 hour ago - 3 minute'; date -d '16 hour'

LrdShaper · 2009-06-01 10:41:56 9
Remove all mail in Postfix mail queue.
This is sample output - yours may be different.
2

postsuper -d ALL

virtualshock · 2009-05-31 23:47:02 4
Check wireless link quality with dialog box

The variable WIRELESSINTERFACE indicates your wireless interface
This is sample output - yours may be different.
1

while [ i != 0 ]; do sleep 1 | dialog --clear --gauge "Quality: " 0 0 $(cat /proc/net/wireless | grep $WIRELESSINTERFACE | awk '{print $3}' | tr -d "."); done

ncaio · 2009-05-31 16:09:23 12
Get pages number of the pdf file
This is sample output - yours may be different.
7

pdfinfo Virtualization_A_Beginner_Guide.pdf | awk /Pages/

ncaio · 2009-05-31 15:45:38 7
Mount a CD-ROM on Solaris (SPARC)

This will allow you to mount a CD-ROM on Solaris SPARC 9 or lower. This will not work on Solaris 10 due to void and the volume management daemons. www.fir3net.com
This is sample output - yours may be different.
-2

mkdir -p /cdrom/unnamed_cdrom ; mount -F hsfs -o ro `ls -al /dev/sr* |awk '{print "/dev/" $11}'` /cdrom/unnamed_cdrom

felix001 · 2009-05-31 08:42:20 5
Scrollable Colorized Long Listing - Hidden Files Sorted Last

To sort hidden files first, simply switch the two inner `ls` commands. I have this aliased to `dira` `dir` is aliased to the simpler version with no hidden files: ls -l --color=always | less -R
This is sample output - yours may be different.
2

less -Rf <( cat <(ls -l --color=always) <(ls -ld --color=always .*) )

asmoore82 · 2009-05-30 23:51:16 9
unzip all zip files under a current directory in the directory those files were in

unzips all zip files in any subdirectory under the current directory. The zip files are unzipped in their respective subdirs
This is sample output - yours may be different.
-3

for f in `find ./ -name "*.zip"` ; do p=`pwd`; d=`dirname $f`; cd $d; b=`basename $f`; unzip $b; cd $p; done

packetloss · 2009-05-30 03:42:53 10
Check syntax of all PHP files before an SVN commit

Really only valuable in a PHP-only project directory. This is using standard linux versions of the tools. On most older BSD variants of sed, use -E instead of -r. Or use: sed 's/\+[[:space:]]\{1,\}//' instead. Show Sample Output
This is sample output - yours may be different.
```
No syntax errors detected in blah/crap.php
No syntax errors detected in thing/stuff.php
PHP Warning:  Unterminated comment starting line 38 in otherthing/include/bootstrap.php on line 38
```
0

for i in `svn status | egrep '^(M|A)' | sed -r 's/\+\s+//' | awk '{ print $2 }'` ; do if [ ! -d $i ] ; then php -l $i ; fi ; done

brephophagist · 2009-05-29 23:59:28 5
Backup sda5 partition to ftp ( using pipes and gziped backup )
This is sample output - yours may be different.
7

dd if=/dev/sda5 bs=2048 conv=noerror,sync | gzip -fc | lftp -u user,passwd domain.tld -e "put /dev/stdin -o backup-$(date +%Y%m%d%H%M).gz; quit"

sputnick · 2009-05-29 21:56:32 5
Show display type
This is sample output - yours may be different.
-1

ioreg -lw0 | grep IODisplayEDID | sed "/[^<]*</s///" | xxd -p -r | strings -6

unixmonkey4003 · 2009-05-29 18:52:12 4
Remove an old gmetric statistic

The -d flag sets the lifetime of a metric and defaults to 0 hence why old metrics continue to be graphed in the dashboard. Submitting a dummy value and short lifetime ensures that the metric is removed from the dashboard.
This is sample output - yours may be different.
-1

gmetric -n $METRIC_NAME -v foo -t string -d 10

root · 2009-05-29 14:21:24 7
view solaris system logs

read system logs of sun solaris 9
This is sample output - yours may be different.
-10

more /var/adm/messages

miccaman · 2009-05-29 12:10:18 19
‹ First < 488 489 490 491 492 > 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

ssh -A user@somehost

the -A argument forwards your ssh private keys to the host you're going to. Useful in some scenarios where you have to hop to one server, and then login to another using a private key.

Get all mac address

Get mac address listed for all interfaces.

Encrypt every file in the current directory with 256-bit AES, retaining the original.

The password is stored in the password file, which obviously must be kept secure, encrypted later with gpg, deleted, or whatever you prefer. To decrypt: $ openssl enc -d -aes-256-cbc -salt -in filename.enc -out filename -pass file:/path/to/password-file Alternative ciphers can be used, of course.

back ssh from firewalled hosts

host B (you) redirects a modem port (62220) to his local ssh. host A is a remote machine (the ones that issues the ssh cmd). once connected port 5497 is in listening mode on host B. host B just do a ssh 127.0.0.1 -p 5497 -l user and reaches the remote host'ssh. This can be used also for vnc and so on.

Convert seconds to [DD:][HH:]MM:SS

Converts any number of seconds into days, hours, minutes and seconds. sec2dhms() { declare -i SS="$1" D=$(( SS / 86400 )) H=$(( SS % 86400 / 3600 )) M=$(( SS % 3600 / 60 )) S=$(( SS % 60 )) [ "$D" -gt 0 ] && echo -n "${D}:" [ "$H" -gt 0 ] && printf "%02g:" "$H" printf "%02g:%02g\n" "$M" "$S" }

Debug a remote php application (behind firewall) using ssh tunnel for XDEBUG port 9000

If you need to xdebug a remote php application, which is behind a firewall, and you have an ssh daemon running on that machine. you can redirect port 9000 on that machine over to your local machine from which you run your xdebug client (I am using phpStorm) So, run this command on your local machine and start your local xdebug client, to start debugging. more info: http://code.google.com/p/spectator/wiki/Installing

Ergo browsing 'pacman' queries (Arch)

Alternative1 (grep support): pacman -Ss python | paste - - | grep --color=always -e '/python' | less -R Alternative2 (eye-candy, no grep): pacman --color=always -Ss "python" | paste - - | less -R in ~/.bashrc: pkg-grep() { pacman -Ss "$1" | paste - - | grep --color=always -e "${2:-$1}" | less -R ; } pkg-search() { pacman --color=always -Ss "python" | paste - - | less -R; }

Monitor a file's size

Enable color pattern match highlighting in grep(1)

This will affect all invocations of grep, even when it is called from inside a script.

Rename files in batch

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