What's this?

commandlinefu.com is the place to record those command-line gems that you return to again and again.

Delete that bloated snippets file you've been using and share your personal repository with the world. 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.

If you have a new feature suggestion or find a bug, please get in touch via http://commandlinefu.uservoice.com/

Get involved!

You can sign-in using OpenID credentials, or register a traditional username and password.

First-time OpenID users will be automatically assigned a username which can be changed after signing in.

Universal configuration monitoring and system of record for IT.

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:



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!

Top Tags





Commands using sed from sorted by
Terminal - Commands using sed - 1,135 results
for fn in *.epub; do echo mv \"$fn\" \"`echo "$fn" | sed -E 's/\.*\/*(.*)( - )(.*)(\.[^\.]+)$/\3\2\1\4/' | sed -E 's/(.*) ([^ ]+)( - )(.*)/\2, \1\3\4/' `\";done | sh
2013-11-30 05:29:52
User: woohoo
Functions: echo mv sed

If you want to test output, run it like this:

for fn in *.epub; do echo mv \"$fn\" \"`echo "$fn" | sed -E 's/\.*\/*(.*)( - )(.*)(\.[^\.]+)$/\3\2\1\4/' | sed -E 's/(.*) ([^ ]+)( - )(.*)/\2, \1\3\4/' `\";done > rename.txt

function hgr() { grep --color -i "${1}" ~/.bash_history | sed -e 's/^ *//g' -e 's/ *$//g' | sort | uniq; }
curl -s http://www.drudgereport.com | sed -n '/<! MAIN HEADLINE>/,/<!-- Main headlines links END --->/p' | grep -oP "(?<=>)[^<].*[^>](?=<)"
mv /etc/fstab /etc/fstab.old && mount | awk '{print $1, $3, $5, $6}'| sed s/\(//g|sed s/\)/' 0 0'/g >> /etc/fstab
find -type f -name '*.conf' -exec sed -Ei 's/foo/bar/' '{}' \;
2013-11-21 16:07:06
Functions: find sed

note that sed -i is non-standard (although both GNU and current BSD systems support it)

Can also be accomplished with

find . -name "*.txt" | xargs perl -pi -e 's/old/new/g'

as shown here - http://www.commandlinefu.com/commands/view/223/a-find-and-replace-within-text-based-files-to-locate-and-rewrite-text-en-mass.

for file in $(git ls-files | grep old_name_pattern); do git mv $file $(echo $file | sed -e 's/old_name_pattern/new_name_pattern/'); done
sed -n '/jan\|Jan\|JAN\|JAn\|jAn\|jAN\|jaN/p' data.txt > jan-only-data.txt
cat file | paste -s -d'%' - | sed 's/\(^\|$\)/"/g;s/%/","/g'
grep -lr "foo" . | xargs sed -i "s/foo/bar/g"
2013-10-28 13:02:47
User: sergeylukin
Functions: grep sed xargs

Replace "foo" with "bar" in all files in current directory recursively

(sed 's/#.*//g'|sed '/^ *$/d'|tr '\n' ';'|xargs echo) < script.sh
2013-10-26 23:23:51
User: knoppix5
Functions: sed tr xargs


Convert an one-liner to script:

foo() { <one-liner> ; }


typeset -f foo


unset -f foo
find . -type f -not -empty -printf "%-25s%p\n"|sort -n|uniq -D -w25|cut -b26-|xargs -d"\n" -n1 md5sum|sed "s/ /\x0/"|uniq -D -w32|awk -F"\0" 'BEGIN{l="";}{if(l!=$1||l==""){printf "\n%s\0",$1}printf "\0%s",$2;l=$1}END{printf "\n"}'|sed "/^$/d"
2013-10-22 13:34:19
User: alafrosty
Functions: awk cut find sed sort uniq xargs

* Find all file sizes and file names from the current directory down (replace "." with a target directory as needed).

* sort the file sizes in numeric order

* List only the duplicated file sizes

* drop the file sizes so there are simply a list of files (retain order)

* calculate md5sums on all of the files

* replace the first instance of two spaces (md5sum output) with a \0

* drop the unique md5sums so only duplicate files remain listed

* Use AWK to aggregate identical files on one line.

* Remove the blank line from the beginning (This was done more efficiently by putting another "IF" into the AWK command, but then the whole line exceeded the 255 char limit).

>>>> Each output line contains the md5sum and then all of the files that have that identical md5sum. All fields are \0 delimited. All records are \n delimited.

openssl rand -hex 1 | tr '[:lower:]' '[:upper:]' | xargs echo "obase=2;ibase=16;" | bc | cut -c1-6 | sed 's/$/00/' | xargs echo "obase=16;ibase=2;" | bc | sed "s/$/:$(openssl rand -hex 5 | sed 's/\(..\)/\1:/g; s/.$//' | tr '[:lower:]' '[:upper:]')/"
2013-10-22 08:40:46
User: 4fd
Functions: bc cut echo sed tr xargs

I did not come up with this one myself, but found this somewhere else several months ago.

find *.less | xargs -I {} lessc {} {}.css && ls *.less.css | sed -e 'p;s/less.css/css/' | xargs -n2 mv
(date "+%d-%m-%Y %H:%M:%S";curl -s --interface lo:1 ifconfig.me| xargs -t geoiplookup 2>&1)|sed -e 's/geoiplookup/IP:/g' -e 's/GeoIP Country Edition/Country/g'|tr -s "\n" " "|sed 'a\ '
2013-10-07 15:28:55
User: guerito
Functions: date sed tr xargs

My first command :) I made this command to log public addresses of a virtual interface who connects random VPN servers around the world.

sed -i 's/^/ls -l /' output_files.txt
2013-10-07 15:12:53
User: sonic
Functions: sed
Tags: sed replace

The original command is great, but I often want to prepend to every line.

find .git/objects -type f -printf "%P\n" | sed s,/,, | while read object; do echo "=== $obj $(git cat-file -t $object) ==="; git cat-file -p $object; done
find /Applications -path '*Contents/_MASReceipt/receipt' -maxdepth 4 -print |sed 's#.app/Contents/_MASReceipt/receipt#.app#g; s#/Applications/##'
2013-09-28 15:44:32
User: bugmenot
Functions: find sed

Shows the OS X applications downloaded from App Store. Doesn't include manually added apps.

for ff in directory; do numLines=`wc -l $ff`; numLines=$(echo $numLines | sed 's/ .*//g'); min=$(sort -nrk 1 $ff | tail -1); if [ $numLines -gt 100 ]; then echo $min >> minValues; fi;done;
shuf /usr/share/dict/words |grep "^[^']\{3,6\}$" |head -n4 | sed -e "s/\b\(.\)/\u\1/g" | tr -d '\n'; echo
2013-09-06 03:05:31
User: chijonutor
Functions: grep head sed tr
Tags: tr xkcd shuf

Took one of the samples, added capitalization and removes in between spaces.

The final "echo" is just for readability.


curl ${URL} 2>/dev/null|grep "<${BLOCK}>"|sed -e "s/.*\<${BLOCK}\>\(.*\)\<\/${BLOCK}\>.*/\1/g"
2013-08-31 14:53:54
User: c3w
Functions: grep sed

set BLOCK to "title" or any other HTML / RSS / XML tag and curl URL to get everything in-between e.g. some text

say () { mpv $(sed -E "s;([a-Z]*)( |$);http://ssl.gstatic.com/dictionary/static/sounds/de/0/\1.mp3 ;g" <<< $*); }; say hello world "how is it" going
wget -qO - http://www.asciiartfarts.com/random.cgi | sed -n '/<pre>/,/<\/pre>/p' | sed -n '/<table*/,/<\/table>/p' | sed '1d' | sed '$d' | recode html..ascii
ioreg -lw0 | grep IODisplayEDID | sed "/[^<]*</s///" | xxd -p -r | strings -6
sed '1,5d' /path/to/file
find . -name "*.h" -o -name "*.cpp" | xargs sed -i 's/addVertexes/addVertices/g'