Commands using sed sorted by votes

Commands using sed (1,319)

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Generate an XKCD #936 style 4 word password

The first grep rejects capitalised words since the dict has proper nouns in it that you mightn't want to use. The second grep rejects words with ending in apostrophe s, and the third forces the words to be at least 15 characters long. Show Sample Output
This is sample output - yours may be different.
```
counterproductive unreasonableness multimillionaires extemporaneously
```
-2

cat /usr/share/dict/words | grep -P ^[a-z].* | grep -v "'s$" | grep -Pv ^.\{1,15\}$ | shuf -n4 | tr '\n' ' ' | sed 's/$/\n/'

bugmenot · 2011-08-15 01:03:48 6
Find/Replace in a bunch of files and keep a log of the changes

This is a more concise answer to http://blog.commandlinekungfu.com/2011/09/episode-158-old-switcheroo.html in my opinion.
This is sample output - yours may be different.
-2

find . -type f | xargs grep -n "Old Text" | tee filesChanged.txt | sed 's/:.*$//' | xargs sed -i 's/Old Text/New Text/g

moogmusic · 2011-09-06 10:28:36 3
Get the latest version of phpMyAdmin

This is to get the latest version of phpMyAdmin to support scripts to download the latest version of the software if they want to automatically update. Show Sample Output
This is sample output - yours may be different.
```
3.4.4-all-languages
```
-2

wget http://tools.web4host.net/versions.tmp --quiet -O - | grep PHPMYADMIN | sed 's/PHPMYADMIN=//' | cat

wr8cr8 · 2011-09-22 04:11:44 3
Get the host from where you logged in

Will print the host associated with the current stdin. This is useful to set the DOIT_SERVER for the doit remote execution agent ( http://www.chiark.greenend.org.uk/~sgtatham/doit/ ) export DOIT_HOST=$(who -m | sed 's/.*($.*$).*/\1/') Note that SSH_CLIENT variable can be lost if you use su or sudo (if set to reset vars) Show Sample Output
This is sample output - yours may be different.
```
mypc01
```
-2

who -m | sed 's/.*($.*$).*/\1/'

keymon · 2011-09-22 10:28:30 8
Show the single most recently modified item in a directory

wrap it in a function if you like... lastfile () { ls -ltp | sed '1 d' | head -n1 } Show Sample Output
This is sample output - yours may be different.
```
-rw-r--r--    1 root     root           118 Dec 31  1969 default.prop
```
-2

ls -ltp | sed '1 d' | head -n1

linuxrawkstar · 2011-10-17 16:21:15 7
geoip information
This is sample output - yours may be different.
-2

geoip() { wget -qO - http://freegeoip.net/xml/$1 | sed '3,12!d;s/<//g;s/>/: /g;s/\/.*//g' ; }

vando · 2011-10-25 21:07:08 45
list current ssh clients
This is sample output - yours may be different.
-2

netstat -atn | grep :22 | grep ESTABLISHED | awk '{print $4}' | sed 's/:22//'

agambier · 2011-11-09 10:51:55 4
turn url and link text into a hyperlink

an extension of command 9986 by c3w, allows for link text. http://google.com,search engine will link the hyperlink with the text after the url instead of linking with the url as linktext Show Sample Output
This is sample output - yours may be different.
```
<a href="http://google.com">search engine</a>
```
-2

sed "s/$[a-zA-Z]*\:\/\/[^,]*$,$.*$/\<a href=\"\1\"\>\2\<\/a\>/"

chrismccoy · 2012-01-06 13:55:05 13
Rank top 10 most frequently used commands

I make an extensive use of sudo, so I had to exclude the sudo part of the command history
This is sample output - yours may be different.
-2

history | sed -e 's/^sudo //' | awk '{print $2}' | sort | uniq -c | sort -rn | head

bibe · 2012-01-07 22:29:54 3
ls output - octal
This is sample output - yours may be different.
-2

ls -l | sed -e 's/--x/1/g' -e 's/-w-/2/g' -e 's/-wx/3/g' -e 's/r--/4/g' -e 's/r-x/5/g' -e 's/rw-/6/g' -e 's/rwx/7/g' -e 's/---/0/g'

Habitual · 2012-01-08 15:25:17 5
Get KDE version

kded --version return this Qt: 3.3.8b KDE: 3.5.10 KDE Daemon: $Id: kded.cpp 711061 2007-09-11 09:42:51Z tpatzig $ awk -F: ................. Awk Field separator NR == 2 ................. Register Number, second line {print $2} ............... second field sed 's/\s\+//g' .......... remove one space or more \s\+ changing by nothing Show Sample Output
This is sample output - yours may be different.
```
3.5.10
```
-2

kded --version | awk -F: 'NR == 2 {print $2}' | sed 's/\s\+//g'

voyeg3r · 2012-01-17 17:44:23 5
Convert HH:MM:SS into seconds

Show Sample Output
This is sample output - yours may be different.
```
1776
```
-2

echo 00:29:36 | sed s/:/*60+/g | bc

debyatman · 2012-08-11 00:47:47 21
Deleting / Ignoring tailer record from the file

sed '$ d' foo.txt.tmp ...deletes last line from the file
This is sample output - yours may be different.
-2

cp foo.txt foo.txt.tmp; sed '$ d' foo.txt.tmp > foo.txt; rm -f foo.txt.tmp

kaushalmehra · 2012-09-13 20:57:40 7
Get the /dev/disk/by-id fragment for a physical drive

This was tested on Ubuntu 12.04 (Precise) LTS Server. It returns the name of the symlink within /dev/disk/by-id for the physical drive you specify. Change /dev/sda to the one you want, and replace ata- with scsi- or the appropriate type for your drive. I used this to pre-configure grub-pc during a non-interactive install because I had to tell it which disk to install grub on, and physical disks don't have a UUID such as that blkid provides.
This is sample output - yours may be different.
-2

ls -l /dev/disk/by-id | egrep ata-.*`hdparm -i /dev/sda | grep SerialNo | sed 's/.*SerialNo=//' | tr -d "\n"`.*sda$ | sed -e 's/.*ata-/ata-/' -e 's|[ ].*||' | tr -d "\n"

wizonesolutions · 2013-01-07 10:20:25 6
a find and replace within text-based files
This is sample output - yours may be different.
-2

find /path/ -type f -exec grep -l '<string of text>' {} \; | xargs sed -i -e 's%<string of text>%<new text string>%g'

leonteale · 2013-02-07 18:47:01 5
Print all lines containing the word 'jan' to a new file.
This is sample output - yours may be different.
-2

sed -n '/jan\|Jan\|JAN\|JAn\|jAn\|jAN\|jaN/p' data.txt > jan-only-data.txt

Kali_Root · 2013-11-15 20:23:53 8
Get the password for PostgreSQL backend db for VMware vRA
This is sample output - yours may be different.
-2

grep -i s2enc /etc/vcac/server.xml | sed -e 's/.* password=\"$[^\"]*$\".*/\1/' | xargs -n 1 vcac-config prop-util -d --p 2>/dev/null; echo

tsener · 2017-03-28 14:11:55 19
hardcode dnsserver, no more rewriting of etc/resolv.conf

runs in background rewriting /etc/resolv.conf periodically dns
This is sample output - yours may be different.
-2

while sudo sed -i -e 's/^$nameserver$.*$/\1 $dns/' /etc/resolv.conf; do sleep 15; done &

dav23r · 2018-05-14 16:03:08 160
Analyse a PHP file for instantations and static calls

This grabs all lines that make an instantation or static call, then filters out the cruft and displays a summary of each class called and the frequency. Show Sample Output
This is sample output - yours may be different.
```
1 parent
1 product_Item
1 promotion_Base
1 swc_Response
2 product_ViewHelper
2 product_ViewTransformer
4 promotion_Tab
5 site_Template
6 self
```
-3

grep -o "$new \(\w\+$\|\w\+::\)" file.php | sed 's/new \|:://' | sort | uniq -c | sort

root · 2009-01-26 12:08:47 58
Display directory hierarchy listing as a tree

Shows the current directory and those below it in a simple tree structure. Recommended use: alias lt='$command_above'
This is sample output - yours may be different.
-3

ls -R | grep : | sed -e '\''s/:$//'\'' -e '\''s/[^-][^\/]*\//--/g'\'' -e '\''s/^/ /'\'' -e '\''s/-/|/'\''

scw · 2009-02-09 22:32:01 16
Download a complete podcast

This download a complete audio podcast
This is sample output - yours may be different.
-3

wget -c -v -S -T 100 --tries=0 `curl -s http://ms1.espectador.com/ podcast/espectador/la_venganza_sera_terrible.xml | grep -v xml | grep link | sed 's/]*>//g'`

fmdlc · 2009-03-04 13:12:28 5
Look for a string in one of your codes, excluding the files with svn and ~ (temp/back up files)

Look for a string in one of your codes, excluding the files with svn and ~ (temp/back up files). This can be useful when you're looking for a particular string in one of your source codes for example, inside a directory which is under version control (e.g. svn), removing all the annoying files with ~ (tilde) from the search. you can even change the command after -exec to delete (rm) or view (cat) files found by 'find' for example
This is sample output - yours may be different.
-3

find . -type f -exec grep StringToFind \{\} --with-filename \;|sed -e '/svn/d'|sed -e '/~/d'

f241vc15 · 2009-03-31 18:09:31 7
Print out "string" between "match1" and "match2"

But who knows to delete the rest of the lines? I want only "string".
This is sample output - yours may be different.
-3

echo "string" | sed -e 's/.*match1//' -e 's/match2.*$//'

P17 · 2009-04-01 15:01:27 8
remove exact phrase from multiple files

Linux : these script enable you to edit multiple files and remove exact phrase from multiple files
This is sample output - yours may be different.
-3

grep -r "mystring" . |uniq | cut -d: -f1 | xargs sed -i "s/mystring//"

mohamednasr2000 · 2009-04-09 12:49:01 9
Join lines
This is sample output - yours may be different.
-3

echo -e "aa\nbb\ncc\ndd\n123" | sed -e :a -e "/$/N; s/\n/;/; ta"

unixmonkey3251 · 2009-04-15 16:12:00 7
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Create a 5 MB blank file

Useful for testing purposes

Save the Top 2500 commands from commandlinefu to a single text file

append empty line after every line in file.txt

Wrap text files on the command-line for easy reading

fold wraps text at 80 characters wide, and with the -s flag, only causes wrapping to occur between words rather than through them.

count how many cat processes are running

DELETE all those duplicate files but one based on md5 hash comparision in the current directory tree

This one-liner will the *delete* without any further confirmation all 100% duplicates but one based on their md5 hash in the current directory tree (i.e including files in its subdirectories). Good for cleaning up collections of mp3 files or pictures of your dog|cat|kids|wife being present in gazillion incarnations on hd. md5sum can be substituted with sha1sum without problems. The actual filename is not taken into account-just the hash is used. Whatever sort thinks is the first filename is kept. It is assumed that the filename does not contain 0x00. As per the good suggestion in the first comment, this one does a hard link instead: $ find . -xdev -type f -print0 | xargs -0 md5sum | sort | perl -ne 'chomp; $ph=$h; ($h,$f)=split(/\s+/,$_,2); if ($h ne $ph) { $k = $f; } else { unlink($f); link($k, $f); }'

Exit mc with 2 keystrokes

For those who like to hit instead of typing "exit" to leave the shell and find it annoying that it doesn't work in Midnight Commander, just press to switch to the subshell and now you can leave with

Use acpi and notify-send to report current temperature every five minutes.

Use acpi and notify-send to report current temperature every five minutes. Works best in a shell script run at startup. acpi is called for temperature and fed to notify-send for a tooltip. After waiting five minutes, it will start over.

Print permanent subtitles on a video (international edition :) )

If it's Hebrew [most probably all RTL languages. Comments?], add -flip-hebrew and -noflip-hebrew-commas to the mplayer switches: $ transcode -i myvideo.avi -x mplayer="-utf8 -flip-hebrew -noflip-hebrew-commas -sub myvideo.srt" -o myvideo_subtitled.avi -y xvid

Get the full path to a file

Useful in scripts when the file is passed in as an argument. Eg. $ filepath=$(realpath $1)

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Commands using sed (1,319)

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