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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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Commands using sed from sorted by
Terminal - Commands using sed - 1,140 results
sed -n '/url/s#^.*url=\(.*://.*\)#\1#p' ~/.mozilla/firefox/*.[dD]efault/SDBackups/*.speeddial | sort | uniq
2015-02-17 20:56:28
User: return13
Functions: sed sort

For all users of https://addons.mozilla.org/de/firefox/addon/speed-dial/

git branch | grep -v "master" | sed 's/^[ *]*//' | sed 's/^/git branch -D /' | bash
2015-01-31 00:29:32
User: Trindaz
Functions: grep sed
Tags: git

Delete all your branches except master (useful after archiving branches)

git branch | grep -v "master" | sed 's/^[ *]*//' | sed 's/.*/& &/' | sed 's/^/git tag archive\//' | bash
2015-01-31 00:26:15
User: Trindaz
Functions: grep sed
Tags: git archive

Description by segments delimited by pipe (|)

1. List all git branches

2. Exclude master

3. Trim output and remove display elements such as * next to current branch

4. Repeat branch name after a space (output on each line: branch_name branch_name)

5. Prepend each line with the git tag command

6. Execute the output with bash

ls -l /dev/disk/by-id |grep -v "wwn-" |egrep "[a-zA-Z]{3}$" |sed 's/\.\.\/\.\.\///' |sed -E 's/.*[0-9]{2}:[0-9]{2}\s//' |sed -E 's/->\ //' |sort -k2 |awk '{print $2,$1}' |sed 's/\s/\t/'
2015-01-25 19:29:40
User: lig0n
Functions: awk egrep grep ls sed sort
Tags: zfs disk info

This is much easier to parse and do something else with (eg: automagically create ZFS vols) than anything else I've found. It also helps me keep track of which disks are which, for example, when I want to replace a disk, or image headers in different scenarios. Being able to match a disk to the kernels mapping of said drive the disks serial number is very helpful

ls -l /dev/disk/by-id

Normal `ls` command to list contents of /dev/disk/by-id

grep -v "wwn-"

Perform an inverse search - that is, only output non-matches to the pattern 'wwn-'

egrep "[a-zA-Z]{3}$"

A regex grep, looking for three letters and the end of a line (to filter out fluff)

sed 's/\.\.\/\.\.\///'

Utilize sed (stream editor) to remove all occurrences of "../../"

sed -E 's/.*[0-9]{2}:[0-9]{2}\s//'

Strip out all user and permission fluff. The -E option lets us use extended (modern) regex notation (larger control set)

sed -E 's/->\ //'

Strip out ascii arrows "-> "

sort -k2

Sort the resulting information alphabetically, on column 2 (the disk letters)

awk '{print $2,$1}'

Swap the order of the columns so it's easier to read/utilize output from

sed 's/\s/\t/'

Replace the space between the two columns with a tab character, making the output more friendly

For large ZFS pools, this made creating my vdevs immeasurably easy. By keeping track of which disks were in which slot (spreadsheet) via their serial numbers, I was able to then create my vols simply by copying and pasting the full output of the disk (not the letter) and pasting it into my command. Thereby allowing me to know exactly which disk, in which slot, was going into the vdev. Example command below.

zpool create tank raidz2 -o ashift=12 ata-... ata-... ata-... ata-... ata-... ata-...
hexdump -n6 -e '/1 ":%02X"' /dev/random|sed s/^://g
2015-01-19 03:09:43
User: rubo77
Functions: hexdump sed

Generate a random MAC address with capital letters

nmap -sP | grep -v "Host" | tail -n +3 | tr '\n' ' ' | sed 's|Nmap|\nNmap|g' | grep "MAC Address" | cut -d " " -f5,8-15
2014-12-26 18:31:53
User: jaimerosario
Functions: cut grep sed tail tr

In the field, I needed to script a process to scan a specific vendor devices in the network. With the help of nmap, I got all the devices of that particular vendor, and started a scripted netcat session to download configuration files from a tftp server.

This is the nmap loop (part of the script). You can however, add another pipe with grep to filter the vendor/manufacturer devices only. If want to check the whole script, check in http://pastebin.com/ju7h4Xf4

sed -i 's/geteuid/getppid/g' /usr/bin/vlc
2014-11-21 17:43:59
User: nadavkav
Functions: sed
Tags: root vlc

Enable root user to run VLC

grep 'font-family:[^;]*' <input file.svg> | sed 's/.*font-family:\([^;]*\).*/\1/g' | sort | uniq
2014-11-03 20:38:08
User: caiosba
Functions: grep sed sort
Tags: fonts svg

List all fonts used by an SVG file. Useful to find out which fonts you need to have installed in order to open/edit an SVG file appropriately.

sed -i 's/oldname/newname/' /etc/hosts /etc/hostname
2014-11-02 22:03:48
User: adria
Functions: sed
Tags: sed hostname host

With sed you can replace strings on the fly.

ip a s eth0 | sed -nr 's!.*inet ([^/]+)/.*!\1!p'
gcloud components list | grep "^| Not" | sed "s/|\(.*\)|\(.*\)|\(.*\)|/\2/" | xargs echo gcloud components update
2014-10-13 20:52:25
User: wires
Functions: echo grep sed xargs

Google Cloud SDK comes with a package manager `gcloud components` but it needs a bit of `sed` to work. Modify the "^| Not" bit to change the package selection. (The gcloud --format option is currently broken)

cat /etc/httpd/logs/access.log | awk '{ print $6}' | sed -e 's/\[//' | awk -F'/' '{print $1}' | sort | uniq -c
2014-10-13 13:39:53
User: suyashjain
Functions: awk cat sed sort uniq

The command will read the apache log file and fetch the virtual host requested and the number of requests.

sed -e '/ s/^;//' -i test.txt
2014-10-13 13:37:53
User: suyashjain
Functions: sed
Tags: sed

This sed command will search for in all lines of test.txt and replace comment symbol ";" . You can use it for other purpose also.

url=`curl http://proxybay.info/ | awk -F'href="|" |">|</' '{for(i=2;i<=NF;i=i+4) print $i,$(i+2)}' | grep follow|sed 's/^.\{19\}//'|shuf -n 1` && firefox $url
2014-10-04 19:08:13
User: dunryc
Functions: awk grep sed

polls the pirate bay mirrors list and chooses a random site and opens it for you in firefox

/bin/ls -lF "$@" | sed -r ': top; s/. ([0-9]+)([0-9]{3}[,0-9]* \w{3} )/ \1,\2/ ; t top'
2014-09-29 14:33:23
User: hackerb9
Functions: sed

This modifies the output of ls so that the file size has commas every three digits. It makes room for the commas by destructively eating any characters to the left of the size, which is probably okay since that's just the "group".

Note that I did not write this, I merely cleaned it up and shortened it with extended regular expressions. The original shell script, entitled "sl", came with this description:

 : '

 : For tired eyes (sigh), do an ls -lF plus whatever other flags you give

 : but expand the file size with commas every 3 digits. Really helps me

 : distinguish megabytes from hundreds of kbytes...


 : Corey Satten, corey@cac.washington.edu, 11/8/89

 : '

Of course, some may suggest that fancy new "human friendly" options, like "ls -Shrl", have made Corey's script obsolete. They are probably right. Yet, at times, still I find it handy. The new-fangled "human-readable" numbers can be annoying when I have to glance at the letter at the end to figure out what order of magnitude is even being talked about. (There's a big difference between 386M and 386P!). But with this nifty script, the number itself acts like a histogram, a quick visual indicator of "bigness" for tired eyes. :-)

sed -e "s/^ $(hostname).novalocal/" /etc/hosts
2014-09-25 15:38:43
User: renoirb
Functions: sed

When booting a VM through OpenStack and managed through cloudinit, the hosts file gets to write a line simiar to ns0.novalocal ns0

This command proven useful while installing a configuration manager such as Salt Stack (or Puppet, or Ansible) and getting node name

zcat error.log.gz | sed 's^\[.*\]^^g' | sed 's^\, referer: [^\n]*^^g' | sort | uniq -c | sort -n
2014-09-24 05:26:24
User: zanhsieh
Functions: sed sort uniq zcat
Tags: sort sed uniq zcat

credit shall fall to this for non-gzipped version:


sed -E "s/"$'\E'"\[([0-9]{1,3}((;[0-9]{1,3})*)?)?[m|K]//g"
sed 's/[0-9]\+/ [&] /g'
ifconfig | egrep -A2 "eth|wlan" | tr -d "\n"| sed 's/\-\-/\n/g'|awk '{print "mac: "$5 " " $7}' | sed 's/addr:/addr: /g'
mysql -u{user} -p{password} -Ne "select distinct concat( \"SHOW GRANTS FOR '\",user,\"'@'\",host,\"';\" ) from user;" mysql | mysql -u {user} -p{password} | sed 's/\(GRANT .*\)/\1;/;s/^\(Grants for .*\)/## \1 ##/;/##/{x;p;x;}'
ifconfig | head -n 2 | tr -d '\n' | sed -n 's/.*\(00:[^ ]*\).*\(adr:[^ ]*\).*/mac:\1 - \2/p'
curl -sSi <URL> | sed '/^\r$/q'
2014-08-27 15:47:05
User: cbuckley
Functions: sed
Tags: curl http

Similar to the following:

curl -I <URL>

but curl -I performs a HEAD request, which can yield different results.

YEAR=2015; ncal 7 $YEAR | sed -n 's/^Fr.* \([^ ]\+\) *$/Jul \1/p'
2014-08-17 11:04:02
User: andreasS
Functions: sed
Tags: sed date

Calculate the date of Sysadmin day (last Friday of July) of any given year

changeFolder() { if [ $# -ne 2 ]; then echo "Usage: changeFolder old new"; return; fi; old=$(pwd); folder=$(echo "$old" | sed -e "s/$1/$2/g"); if [ ! -d "$folder" ]; then echo "Folder '$folder' not found."; return; fi; echo "$old -> $folder"; cd $folder;}
2014-07-29 15:36:32
User: Dracks
Functions: cd echo sed

change the path where you are, when is executed, is usefule when you've got folders to classify something like a tags, you've got devel/dist, android/ios, etc. like:



You can change between devel/project folder to dist/project without leave project.

If somebody has a better idea to do that without replace command.