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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!

Top Tags



Psst. Open beta.

Wow, didn't really expect you to read this far down. The latest iteration of the site is in open beta. It's a gentle open beta-- not in prime-time just yet. It's being hosted over at UpGuard (link) and you are more than welcome to give it a shot. Couple things:

  • » The open beta is running a copy of the database that will not carry over to the final version. Don't post anything you don't mind losing.
  • » If you wish to use your user account, you will probably need to reset your password.
Your feedback is appreciated via the form on the beta page. Thanks! -Jon & CLFU Team

Commands using sed from sorted by
Terminal - Commands using sed - 1,160 results
sed -i.bak 's/old/new/g' file
2010-01-06 17:04:05
User: deltaray
Functions: sed
Tags: bash sed

sed already has an option for editing files in place and making backup copies of the old file. -i will edit a file in place and if you give it an argument, it will make a backup file using that string as an extension.

ls | sed "/^/=" | sed "N;s/\n/. /"
ls | sed -n '1h;2,$H;${g;s/\n/,/g;p}'
2010-01-06 15:56:16
User: glaudiston
Functions: ls sed

searching for sed to make a csv, I found the solution from Mr. Stolz in http://funarg.nfshost.com/r2/notes/sed-return-comma.html

you can also to use:

tr "\n" "," ;

But I was looking for a sed way =)

sudo find /etc/rc{1..5}.d -name S99myservice -type l -exec sh -c 'NEWFN=`echo {} | sed 's/S99/K99/'` ; mv -v {} $NEWFN' \;
2010-01-03 00:56:57
User: zoomgarden
Functions: find mv sed sh sudo

Change run control links from start "S" to stop "K" (kill) for whatever run levels in curly braces for a service called "myservice". NEWFN variable is for the new filename stored in the in-line shell. Use different list of run levels (rc*.d, rc{1,3,5}.d, etc.) and/or swap S with K in the command to change function of run control links.

sed -i -e 's/war/peace/g' *
2010-01-02 13:16:35
User: tiagofischer
Functions: sed

Replace the word 'war' to word 'peace' in every file in the current directory.

command | sed '/regex/q'
2009-12-29 14:52:41
User: taliver
Functions: command sed
Tags: sed

Slightly simpler version of previous sed command that does the same thing. In this case, the output will stop at the command, and the entire command will be terminated as well, instead of proceeding through the whole file.

find dir -size -1024k -type f | xargs -d $'\n' -n1 ls -l | cut -d ' ' -f 5 | sed -e '2,$s/$/+/' -e '$ap' | dc
2009-12-28 04:23:01
User: zhangweiwu
Functions: cut dir find ls sed xargs
Tags: size sum

The command gives size of all files smaller than 1024k, this information, together with disk usage, can help determin file system parameter (e.g. block size) or storage device (e.g. SSD v.s. HDD).

Note if you use awk instead of "cut| dc", you easily breach maximum allowed number of records in awk.

sfdisk -d /dev/sda | sed 's/sda/sdb/g' | sfdisk /dev/sdb
command | sed -n '1,/regex/p'
curl --silent search.twitter.com | sed -n '/div id=\"hot\"/,/div/p' | awk -F\> '{print $2}' | awk -F\< '{print $1}' | sed '/^$/d'
/sbin/ip -f inet addr | sed -rn 's/.*inet ([^ ]+).*(eth[[:digit:]]*(:[[:digit:]]+)?)/\2 \1/p' | column -t
find ./wp-content/themes/rotce2009/ -name '*.php' -type f | xargs sed -i 's/<? /<?php /g'
echo $LS_COLORS | sed 's/:/\n/g' | awk -F= '!/^$/{printf("%s \x1b[%smdemo\x1b[0m\n",$0,$2)}'
2009-12-15 01:17:46
User: bones7456
Functions: awk echo sed

This can show all ls colors, with a demo.

perl -lne 'print for /url":"\K[^"]+/g' $(ls -t ~/.mozilla/firefox/*/sessionstore.js | sed q)
2009-12-14 00:51:54
User: sputnick
Functions: ls perl sed

If you want all the URLs from all the sessions, you can use :

perl -lne 'print for /url":"\K[^"]+/g' ~/.mozilla/firefox/*/sessionstore.js

Thanks to tybalt89 ( idea of the "for" statement ).

For perl purists, there's JSON and File::Slurp modules, buts that's not installed by default.

sed = <file> | sed 'N;s/\n/\t/'
2009-12-11 14:39:14
User: jgc
Functions: sed
Tags: sed

Print out contents of file with line numbers.

This version will print a number for every line, and separates the numbering from the line with a tab.

sed '/./=' infile | sed '/^/N; s/\n/ /'
2009-12-10 16:24:56
User: glaudiston
Functions: sed

There's too many options to number,

My curiosity has forced me to make it using only sed.

Maybe useful... or not... :-S

unzip -p some.docx word/document.xml | sed -e 's/<[^>]\{1,\}>//g; s/[^[:print:]]\{1,\}//g'
sed -e 's/{"url":/\n&/g' ~/.mozilla/firefox/*/sessionstore.js | cut -d\" -f4
grep -oP '"url":"\K[^"]+' $(ls -t ~/.mozilla/firefox/*/sessionstore.js | sed q)
2009-12-09 20:34:32
User: sputnick
Functions: grep ls sed

Require "grep -P" ( pcre ).

If you don't have grep -P, use that :

grep -Eo '"url":"[^"]+' $(ls -t ~/.mozilla/firefox/*/sessionstore.js | sed q) | cut -d'"' -f4
wget -q http://dynamic.xkcd.com/comic/random/ -O-| sed -n '/<img src="http:\/\/imgs.xkcd.com\/comics/{s/.*\(http:.*\)" t.*/\1/;p}' | awk '{system ("wget -q " $1 " -O- | display -title $(basename " $1") -write /tmp/$(basename " $1")");}'
2009-12-09 13:41:25
User: laugg
Functions: awk sed wget
Tags: sed awk wget comic

Only need to install Image Magick package.

Display a xkcd comic with its title and save it in /tmp directory

If you prefer to view the newest xkcd, use this command:

wget -q http://xkcd.com/ -O-| sed -n '/<img src="http:\/\/imgs.xkcd.com\/comics/{s/.*\(http:.*\)" t.*/\1/;p}' | awk '{system ("wget -q " $1 " -O- | display -title $(basename " $1") -write /tmp/$(basename " $1")");}'
find . -type f -exec sed -i s/oldstring/newstring/g {} +
2009-12-09 00:46:13
User: SlimG
Functions: find sed
Tags: sed find

This command find all files in the current dir and subdirs, and replace all occurances of "oldstring" in every file with "newstring".

grep -Ri searchterm ~/.purple/logs/* | sed -e 's/<.*?>//g'
2009-12-07 19:38:18
User: Nostoc
Functions: grep sed
Tags: pidgin logs

will search trought pidgin conversation logs for "searchterm", and output them stripping the html tags. The "sed" command is optionnal if your logs are stored in plain text format.

git clean -n | sed 's/Would remove //; /Would not remove/d;' | xargs mv -t stuff/
ipcalc $(ifconfig eth0 | grep "inet addr:" | cut -d':' -f2,4 | sed 's/.+Bcast:/\//g') | awk '/Network/ { print $2 } '
wget -O - -q http://www.azlyrics.com/lyrics/abba/takeachanceonme.html | sed -e 's/[cC]hance/dump/g' > ~/tdom.htm && firefox ~/tdom.htm
2009-12-04 22:56:00
User: tighe
Functions: sed wget

ABBA would be more entertaining if they sang this.