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May 19, 2015 - A Look At The New Commandlinefu
I've put together a short writeup on what kind of newness you can expect from the next iteration of clfu. Check it out here.
March 2, 2015 - New Management
I'm Jon, I'll be maintaining and improving clfu. Thanks to David for building such a great resource!

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Terminal - All commands - 12,230 results
phpcs --no-colors --standard=WordPress-Core -s -- $( find . -name '*.php' ) | ack -o '(?<=\()\w+(\.\w+)+(?=\)$)' | sort | uniq -c | sort -nr
cd $JAVA_HOME && java -Xbootclasspath/a:jre/lib/deploy.jar -Djava.locale.providers=HOST,JRE,SPI -Xdock:name="Java Control Panel" com.sun.deploy.panel.ControlPanel
2015-07-30 19:24:33
Functions: cd
Tags: java jre

Useful if you need to make changes to the JVM on, say, 1.7 when your default installed is 1.8.

export JAVA_HOME=$(/usr/libexec/java_home -v 1.7)
2015-07-30 18:50:51
Functions: export
Tags: version java

Useful if you have multiple versions of Java installed. The 1.7 pkg for Mac doesn't tell you anything about where it's putting stuff.

pyt() { youtube-dl -q --max-downloads 1 --no-playlist --default-search ${2:-ytsearch} "$1" -o - | mplayer -vo null /dev/fd/3 3<&0 </dev/tty; }
2015-07-27 15:19:59
User: snipertyler

Same as other command, however uses youtube-dl internal search (thanks to qoxxxx mentioning this)

It does however seem to be a little buggy and youtube-dl crashes sometimes.


pyt 'Stairway to heaven - Led Zeppelin'

pyt 'brain damage - Pink Floyd'

No web browser or even X needed. Just a cli and internet connection!

mplayer is pauseable and can skip ahead

This may break if youtube changes their search html.

ir() { perl -pne 's/(.)(.*)/\[\1]\2/' <<< "$@" ;}
2015-07-25 14:13:33
User: bartonski
Functions: perl
Tags: ps

Note that `grep "$(ir foo)"` really doesn't save any typing, but wrapping this inside a second shell function will:

psg() { grep "$(ir \"$@\")" ;}
mojo get <URL> 'a[href]' attr href
sed -i.$(date +%F@%T) 's/^LogLevel warn/LogLevel debug/g' httpd.conf
2015-07-22 14:47:26
User: zlemini
Functions: date sed

httpd.conf httpd.conf.2015-07-22@14:43:20

pyt() { id=$(curl -s 'https://www.youtube.com/results?search_query='$(tr \ + <<<"$1") | grep -om3 '"[[:alnum:]]\{11\}"' | awk NR==3 | tr -d \"); youtube-dl -q 'https://www.youtube.com/watch?v='"$id" -o - | mplayer -vo null /dev/fd/3 3<&0 </dev/tty; }
2015-07-20 05:30:27
User: snipertyler
Functions: awk grep tr

pyt 'Stairway to heaven - Led Zeppelin'

pyt 'brain damage - Pink Floyd'

No web browser or even X needed. Just a cli and internet connection!

mplayer is pauseable and can skip ahead

This may break if youtube changes their search html.

grep -v -e '^$' -e '^[#\[]' -e '\/' some_file
2015-07-17 21:28:14
User: abhikeny
Functions: grep
Tags: grep no-match

Grep for:

>> non-empty lines : denoted by -v -e '^$'

>> that do not start with # (comments) or : denoted by -v -e '^[#\]'

>> and does not include : denoted by -v -e '\'

(Note that we use -v only once)

ran() { [ $((RANDOM%100)) -lt "$1" ] && shift && "$@"; }
2015-07-16 13:32:45
User: flatcap
Functions: shift
Tags: bash shell random

Randomly decide whether to run a command, or fail.

It's useful for testing purposes.



Note: In this version the percentage is required.


This is like @sesom42 and @snipertyler's commands but in a USABLE form.


e.g. In your complicated shell script, put "ran 99" before a crucial component.

Now, it will fail 1% of the time allowing you to test the failure code-path.

ran 99 my_complex_program arg1 arg2
sort -s -b -t' ' -k 4.9,4.12n -k 4.5,4.7M -k 4.2,4.3n -k 4.14,4.15n -k 4.17,4.18n -k 4.20,4.21n access.log*
2015-07-16 00:22:03
User: sesom42
Functions: sort
Tags: sort log apache

Sort Apache access logs by date and time using sort key field feature

ran() { [ $((RANDOM%100)) -lt ${1:-50} ]; }
2015-07-16 00:06:25
User: sesom42

Command will succeed n% of the time.

ran 75 will cause command to succeed 75% of the time.

No argument will cause it to succeed 50% of the time.

ran() { R=$((RANDOM%100)); if [ $R -gt "${1:-50}" ]; then echo FALSE; false; else echo TRUE; true; fi; }
2015-07-15 15:34:56
User: snipertyler
Functions: echo

Command will succeed n% of the time.

ran 75 will cause command to succeed 75% of the time.

No argument will cause it to succeed 50% of the time.

pvl() { (for i in "$@"; do youtube-dl -q --max-downloads 1 --no-playlist "$i" -o - | mplayer -vo null /dev/fd/3 3<&0 </dev/tty; sleep .5; done); }
2015-07-14 04:44:36
User: snipertyler
Functions: sleep

pvl 'link1' 'link2' 'link3'

Play Youtube, Vimeo, etc links without visual elements.

Great for music videos when you just want the audio.

You can control mplayer with this!

Hit Ctrl-C twice to exit (if you're playing multiple files)

echo "text to prepend" | cat - file
lsblk -do name,model,serial
2015-07-12 10:49:49
User: hackerb9

As of this writing, this requires a fairly recent version of util-linux, but is much simpler than the previous alternatives. Basically, lsblk gives a nice, human readable interface to all the blkid stuff. (Of course, I wouldn't recommend this if you're going to be parsing the output.) This command takes all the fun out of the previous nifty pipelines, but I felt I ought to at least mention it as an alternative since it is the most practical.

xmlpager() { xmlindent "$@" | awk '{gsub(">",">'`tput setf 4`'"); gsub("<","'`tput sgr0`'<"); print;} END {print "'`tput sgr0`'"}' | less -r; }
2015-07-12 09:22:10
User: hackerb9
Functions: awk less

Don't want to open up an editor just to view a bunch of XML files in an easy to read format? Now you can do it from the comfort of your own command line! :-) This creates a new function, xmlpager, which shows an XML file in its entirety, but with the actual content (non-tag text) highlighted. It does this by setting the foreground to color #4 (red) after every tag and resets it before the next tag. (Hint: try `tput bold` as an alternative). I use 'xmlindent' to neatly reflow and indent the text, but, of course, that's optional. If you don't have xmlindent, just replace it with 'cat'. Additionally, this example shows piping into the optional 'less' pager; note the -r option which allows raw escape codes to be passed to the terminal.

git diff $(git log --pretty=format:%h -2 --reverse | tr "\n" " ")
2015-07-07 17:50:50
Functions: diff tr
Tags: git

A great command to assign to an alias, allowing you to git diff the last two commits in git.

for file in $( git ls-files ); do echo $file; touch -t $(git --no-pager log --date=local -1 --format="%ct" $file | php -r 'echo @date( "YmdHi.s", trim( file_get_contents( "php://stdin" ) ) );') $file; done
echo "display:data?" | nc "$scope_ip_address" 5555 | dd bs=1 skip=11 2>/dev/null | convert bmp:- out_file.png
2015-06-27 06:43:43
User: ichbins
Functions: dd echo
Tags: convert rigol

Scope should have the Rigol Ultravision Technology otherwise it won't accept the command. ImageMagic is required. Scope sends a 1.1M BMP file and converted to PNG it's only 18-20K

ssh -o "ProxyCommand ssh user@reachable_host -W %h:%p" user@unreacheable_host
2015-06-26 06:23:14
User: renich
Functions: ssh
Tags: ssh

This command uses the reachable_host as a proxy; redirecting your request to the unreachable_host.

The main advantage is that you need only one ssh key. You copy the public part to both servers and you can access the unreachable_host without a problem.

Also, you can put this on ~/.ssh/config to access the unreachable_host directly:

# config


ProxyCommand ssh user@reachable_host -W %h:%p

and, then, just ssh user@unreachable_host.

jhead -autorot -ta+1 *
exiftool -AllDates+=1 -{Track,Media}{Create,Modify}Date+=1 *.mov
diff a.txt b.txt | grep -E '^(<|>)' | sed 's:^< \(.*\):<del style="color\:red; text-decoration\: none">- \1</del><br>:' | sed 's:^> \(.*\):<ins style="color\:green; text-decoration\: none">+ \1</ins><br>:'
ps -auxf | sort -nr -k 4 | head -10