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2011-03-12 - Confoo 2011 presentation
Slides are available from the commandlinefu presentation at Confoo 2011: http://presentations.codeinthehole.com/confoo2011/
2011-01-04 - Moderation now required for new commands
To try and put and end to the spamming, new commands require moderation before they will appear on the site.
2010-12-27 - Apologies for not banning the trolls sooner
Have been away from the interwebs over Christmas. Will be more vigilant henceforth.
2010-09-24 - OAuth and pagination problems fixed
Apologies for the delay in getting Twitter's OAuth supported. Annoying pagination gremlin also fixed.




All commands from sorted by
Terminal - All commands - 11,610 results
find . -exec rename 's/_/\ /g' {} +
2014-05-05 02:47:19
User: KlfJoat
Functions: find rename

Everyone wants to take spaces out of filenames. Forget that. I want to put them back in. We've got tools and filesystems that support spaces, they look better, so I'm going to use them.

Because of how find works I find I need to run this multiple times, if it's renaming subdirs. But it can be re-run without issues.

I got this version of the command from a comment in this underscore-generating command. http://www.commandlinefu.com/commands/view/760/find-recursively-from-current-directory-down-files-and-directories-whose-names-contain-single-or-multiple-whitespaces-and-replace-each-such-occurrence-with-a-single-underscore. All I did was change the regex.

brew update && brew upgrade
stat -c '%n %U:%G-%a' *
2014-05-03 04:56:23
User: snipertyler
Functions: stat
Tags: permissions


alias perm="stat -c '%n %U:%G-%a'"


perm() { for ll in $@; do stat -c "%n %U:%G-%a" "$ll"; done; }

netstat -pnut -W | column -t -s $'\t'
2014-05-03 00:48:53
User: Nadiar
Functions: column netstat

This takes all of the tab spaces, and uses column to put them into the appropriately sized table.

find directory -type l -lname string
2014-05-02 14:44:24
User: gumption
Functions: find
Tags: find

Finds all symbolic links in the specified directory which match the specified string pattern.

I used this when upgrading from an Apple-supported version of Java 6 (1.6.0_65) to an Oracle-supported version (1.7.0_55) on Mac OS X 10.8.5 to find out which executables were pointing to /System/Library/Frameworks/JavaVM.framework/Versions/Current/Commands (Apple version) vs. /Library/Java/JavaVirtualMachines/jdk1.7.0_55.jdk/Contents/Home/bin (Oracle version). However, it appears the current JDK installation script already takes care of modifying the links.

find /some/directory/* -prune -type f -name *.log
2014-05-02 00:14:32
User: bigstupid
Functions: find

This find syntax seems a little easier to remember for me when I have to use -prune on AIX's find. It works with gnu find, too.

Add whatever other find options after -prune

psql -X -A -t -c "SELECT version();"
2014-05-01 18:10:20
User: malathion

Without using a pipe.

-X ignores the user's .psqlrc configuration file

-A sets un-aligned table output mode

-t prints rows only (no headers or footers)

xset dpms force off
2014-05-01 14:16:27
User: GusPS

To turn off monitor:

xset dpms force off

To turn on, simply press a key, or move mouse/mousepad.

10,30,50 * * * * ping -c1 -w3 www.test.com >/dev/null
10,30,50 * * * * ping -q -c1 -w3 www.test.com | grep '1 received' - || mail -ne -s'Host not reachable' test@gmail.com
git rm $(git ls-files --deleted)
2014-05-01 06:21:56
User: jaapie
Functions: rm
Tags: git

You'll probably want to pass in the -rf options if you have to delete a directory or something.

for i in $(cat vulns.txt); do echo $i; rpm -qa ?changelog | grep -i $i; done
2014-04-30 16:11:14
User: sonny108
Functions: cat echo grep rpm

Found it online and could be very useful

pgrep 'sleep' | while read pid; do pstree -sa -H$pid $pid ; done
csvcount() { for dir in $@; do echo -e "$(find $dir -name '*.csv' | wc -l)\t$dir"; done }
ifconfig |grep HWaddr |cut -d ' ' -f 1,11 |grep eth0 |cut -d ' ' -f 2|xargs | awk -F':' '{ print $1$2$3$4$5$6 }'
2014-04-25 18:43:47
User: simplewall
Functions: awk cut grep ifconfig xargs

Many tasks need mac id check. above command exactly do the same

ps -efa | grep httpd | grep -v grep | awk '{ print $2 }' |xargs
ffmpeg -i file.ext -acodec copy -vn out.ext
2014-04-25 14:24:57
User: snipertyler
Tags: ffmpeg

This removes the video and subsequent file size and directly copies the audio.

export PORT=11211; ss -an4 | grep -E "ESTAB.*$PORT" | awk '{print $5}' | awk -F: '{print $1}' | sort | uniq -c | sort -nr
tar -xvpf file.tar.gz
2014-04-25 10:23:03
User: shajeen
Functions: tar

-x, --extract, --get

extract files from an archive

-p, --preserve-permissions, --same-permissions

extract information about file permissions (default for superuser)

-f, --file=ARCHIVE

use archive file or device ARCHIVE

-v, --verbose

verbosely list files processed

psql -h <SERVER NAME HERE> -t -c 'SELECT version();' |head -1
rtfm() { help $@ || man $@ || xdg-open "http://www.google.com/search?q=$@"; }
2014-04-25 04:17:03
User: KlfJoat
Functions: man

Same as the other rtfm's, but using the more correct xdg-open instead of $BROWSER.

I can't find a way to open info only if the term exists, so it stays out of my version.

echo 16384 > /proc/sys/net/ipv4/neigh/default/gc_thresh1; echo 32768 > /proc/sys/net/ipv4/neigh/default/gc_thresh2; echo 65535 > /proc/sys/net/ipv4/neigh/default/gc_thresh3; echo 1 > /proc/sys/net/ipv4/icmp_ignore_bogus_error_responses
2014-04-25 00:18:58
User: andregyn62
Functions: echo

This command solve the problem ping: sendmsg: No buffer space available to.

sudo add-apt-repository ppa:PPA_TO_ADD
2014-04-24 20:02:39
User: KlfJoat
Functions: sudo

There is no longer a need to add PGP keys for Ubuntu Launchpad PPA's.

The add-apt-repository command creates a new file for the PPA in /etc/sources.list.d/ then adds the PPA's keys to the apt keyring automatically. No muss, no fuss.

strings * |grep -v "Apple" |grep http |uniq |sed "s/<[^>]\+>//g"
for i in `grep -ri "?\|?\|?\|?\|?" * --col | cut -d: -f1 |sort -u `;do sed -i "s/?/\&aacute;/g" $i; sed -i "s/?/\&eacute;/g" $i; sed -i "s/?/\&iacute;/g" $i; sed -i "s/?/\&oacute;/g" $i; sed -i "s/?/\&uacute;/g" $i; echo "HTMLizing file [$i]";done
2014-04-24 11:43:36
User: linuxninja
Functions: cut echo sed sort

If we've many files containing (?, ?, ?, ?, ? ) characters instead of ?, ?,... etc,...

we can ue this simple command line running a sed command inside a for loop searching for files containing that characters.

Hope u like it! Enjoy! ;)