Commands using sed sorted by votes

Commands using sed (1,319)

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Delete an hard disk entry in Virtualbox registry

Simple but useful command, I use this for purge an hard disk entry in Virtualbox registry file (is in ~user/.Virtualbox) that persist if I erase a Virtual Machine, so I need to delete it manually.
This is sample output - yours may be different.
-3

sed -i '/Centos/d' VirtualBox.xml

servermanaged · 2009-05-05 13:03:55 6
Get internal and external IP addresses

Gets the internal and external IP addresses of all your interfaces, or the ones given as arguments Show Sample Output
This is sample output - yours may be different.
```
nathan@lion:~$ ips
lo   127.0.0.1      127.0.0.1
eth0 192.168.1.2    80.106.232.129
nathan@lion:~$ ips eth0
eth0 192.168.1.2    80.106.232.129
```
-3

ips(){ for if in ${1:-$(ip link list|grep '^.: '|cut -d\ -f2|cut -d: -f1)};do cur=$(ifconfig $if|grep "inet addr"|sed 's/.*inet addr:$[0-9\.]*$.*/\1/g');printf '%-5s%-15s%-15s\n' $if $cur $(nc -s $cur sine.cluenet.org 128 2>/dev/null||echo $cur);done;}

frozenfire · 2009-08-07 10:04:46 3
List your largest installed packages (on Debian/Ubuntu)

Use the hold space to preserve lines until data is needed.
This is sample output - yours may be different.
-3

sed -ne '/^Package: $.*$/{s//\1/;h;};/^Installed-Size: $.*$/{s//\1/;G;s/\n/ /;p;}' /var/lib/dpkg/status | sort -rn

arcege · 2009-10-19 19:01:17 24
Show a script or config file without comments

Strips comments from at least bash and php scripts. Normal # and // as well as php block comments removes all of the: empty/blank lines lines beginning with # lines beginning with // lines beginning with /* lines beginning with a space and then * lines beginning with */ It also deletes the lines if there's whitespace before any of the above. Add an alias to use in .bashrc like this: alias stripcomments="sed -e '/^[[:blank:]]*#/d; s/[[:blank:]][[:blank:]]*#.*//' -e '/^$/d' -e '/^\/\/.*/d' -e '/^\/\*/d;/^ \* /d;/^ \*\//d'"
This is sample output - yours may be different.
-3

sed -e '/^[[:blank:]]*#/d; s/[[:blank:]][[:blank:]]*#.*//' -e '/^$/d' -e '/^\/\/.*/d' -e '/^\/\*/d;/^ \* /d;/^ \*\//d' /a/file/with/comments

unixmonkey6951 · 2009-11-10 17:47:22 10
Random password generating function

This uses urandom to produce a random password. The random values are uuencoded to ensure only printable characters. This only works for a number of characters between 1 and 60. Show Sample Output
This is sample output - yours may be different.
```
$ mkpasswd 56
AB:C[)\"=H#J:E()EY>HA6J,R741+ACL&08PC)P4Z#3R^YZ*3L0@O<<6
$ mkpasswd 9
YMO;<&.FB
```
-3

mkpasswd() { head -c $(($1)) /dev/urandom | uuencode - | sed -n 's/.//;2s/$.\{'$1'\}$.*/\1/p' ;}

taliver · 2009-11-19 14:27:52 5
show your private/local ip address

This doesn't make any assumptions about your IP address and prints out one IP address per line if you have multiple network interfaces. Show Sample Output
This is sample output - yours may be different.
```
77.98.155.94
10.0.0.1
```
-3

ifconfig | sed '/.*addr.*Bcast.*/ ! d'| sed 's/.*addr:$[0-9\.]*$.*/\1/'

Haegin · 2010-03-26 08:13:13 3
Bash function to see if the day ends in "y"

For those days when you need to know if something is happening because the day ends in "y". Show Sample Output
This is sample output - yours may be different.
```
$ ends_in_y
1
```
-3

function ends_in_y() { if [ `date +%A | sed -e 's/$^.*$$.$$/\2/'` == "y" ]; then echo 1; else echo 0; fi }

allrightname · 2010-04-06 20:14:34 7
Find files and list them with a readable informative output
This is sample output - yours may be different.
-3

find . -type f | sed 's,.*,stat "&" | egrep "File|Modify" | tr "\\n" " " ; echo ,' | sh | sed 's,[^/]*/$.*$. Modify: $....-..-.. ..:..:..$.*,\2 \1,' | sort

pepin · 2010-05-27 22:30:18 3
Get the mac address of eth0 in uppercase minus the colons

This will get the mac address of the eth0 and change lowercase to uppercase. The sed command removed the colons.
This is sample output - yours may be different.
-3

ifconfig eth0 | grep 'HWaddr' | awk '{print $5}' | tr 'a-z' 'A-Z' | sed -e 's/://g'

minigeek · 2010-06-26 05:35:03 3
LIST FILENAMES OF FILES CREATED TODAY IN CURRENT DIRECTORY
This is sample output - yours may be different.
-3

ls -la | grep $(date +%Y-%m-%d) | egrep -v -e '\.{1,2}' | sed "s/.*\:[0-9]\{2\} $.\+$$/\\1/g"

cicatriz · 2010-07-29 14:37:51 3
Remove lines with matched string

Search in all html files and remove the lines that 'String' is found.
This is sample output - yours may be different.
-3

for i in $(find . -iname '*.html'); do sed '/String/d' $i > $i-tmp; mv $i-tmp $i; done

cadu · 2010-09-21 14:35:18 9
See where a shortened url takes you before click

We can put this inside a function: fxray() { curl -s http://urlxray.com/display.php?url="$1" | grep -o '<title>.*</title>' | sed 's/<title>.*--> $.*$<\/title>/\1/g'; }; fxray http://tinyurl.com/demo-xray Show Sample Output
This is sample output - yours may be different.
```
http://urlxray.com/sex-so-hot-it-will-blow-your-mind.php

(Note: this result is totally SFW)
```
-3

curl -s http://urlxray.com/display.php?url=http://tinyurl.com/demo-xray | grep -o '<title>.*</title>' | sed 's/<title>.*--> $.*$<\/title>/\1/g'

karpoke · 2010-09-30 10:25:18 4
Get your local IP regardless of your network interface

short enough to be tweetable Show Sample Output
This is sample output - yours may be different.
```
192.168.1.102
```
-3

ifconfig | grep "inet\ " | grep -v "127.0" | sed -e 's/inet\ addr://g' | sed -e 's/Bcast:/\ \ \ \ \ \ \ /g' | cut -c 1-29 | sed -e 's/\ //g'

LinuxMan · 2010-12-01 19:06:11 4
Backup a file with a date-time stamp

This backup function preserve the file suffix allowing zsh suffix aliases and desktop default actions to work with the backup file too. Show Sample Output
This is sample output - yours may be different.
```
> ls
image.jpg

> buf image.jpg; ls
image.2010-12-14.jpg
```
-3

buf () {oldname=$1; if [ "$oldname" != "" ]; then datepart=$(date +%Y-%m-%d); firstpart=`echo $oldname | cut -d "." -f 1`; newname=`echo $oldname | sed s/$firstpart/$firstpart.$datepart/`; cp -i ${oldname} ${newname}; fi }

Seebi · 2010-12-14 19:58:34 4
Download random gifs from gifbin.com

Download a bunch of random animated gifs from http://gifbin.com/
This is sample output - yours may be different.
-3

site="http://gifbin.com/"; for i in $(wget -qO- "$site"random| sed -r "s/^.*(bin\/.+\.gif).*$/\1/m" | grep "^bin"); do wget -c "$site$i"; filename=`basename $i`; [ `identify $filename | wc -l` -gt 1 ] || rm -f $filename; done

az · 2011-02-15 10:05:37 7
Are the two lines anagrams?

Are the two strings anagrams of one another? sed splits up the strings into one character per line the result is sorted cmp compares the results Note: This is not pretty. I just wanted to see if I could do it in bash. Note: It uses fewer characters than the perl version :-)
This is sample output - yours may be different.
-3

s(){ sed 's/./\n\0/g'<<<$1|sort;};cmp -s <(s foobar) <(s farboo)||echo -n "not ";echo anagram

flatcap · 2011-02-17 12:42:45 7
Recursive and alphabetical orderly cp
This is sample output - yours may be different.
-3

for file in `find *| sort -n | sed 's% %?%g'`; do echo "${file//?/ }"; cp --parents "${file//?/ }" /destinity_folder/ ;done

juanmi · 2011-05-23 16:34:08 7
Get rid of multiple spaces/tabs in a text file

A much shorter version of this command.
This is sample output - yours may be different.
-3

sed -i "s/\s*/ /g;s/\s*$//" input_file

gitterrost4 · 2011-12-12 10:58:33 6
tty columns

for small output only example usage: jobs -l |col1 72
This is sample output - yours may be different.
-3

col1(){ case $# in 0)echo col1 col-length;;*) sed 's/$.\{'"$1"'\}$$.*$/\1/' esac;}

argv · 2011-12-30 23:35:29 3
list all available disks and disk partitions
This is sample output - yours may be different.
-3

sed 's/#.*//' /etc/fstab | column -t

jlaunay · 2012-08-17 12:56:31 3
count the number of times you match a substring in a larger text file
This is sample output - yours may be different.
-3

sed ?s/[sub_str]/[sub_str]\n/g? [text_file] | wc -l

opexxx · 2013-03-28 12:00:56 4
List all executable files in the current directory
This is sample output - yours may be different.
-4

ls -F | grep '\''\*'\'' | sed '\''s/\*$//'\

int19h · 2009-02-16 01:16:49 44
Convert the first character of a string to uppercase

Show Sample Output
This is sample output - yours may be different.
```
Example
```
-4

echo 'example' | sed -e 's/^$.$/\U\1/'

agentk · 2009-02-16 02:14:27 55
delete first X lines of a file

deletes first 55 lines; change the 55 to whatever number
This is sample output - yours may be different.
-4

sed '1,55d'

grep · 2009-02-16 20:36:25 8
journaling directories

use today's time stamp to make a unique directory for today or an hour ago ... Show Sample Output
This is sample output - yours may be different.
```
Wed_Apr_29_15_53_58_CDT_2009
```
-4

mkdir `date | sed 's/[: ]/_/g'`

copremesis · 2009-04-29 21:28:45 36
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list block devices

Shows all block devices in a tree with descruptions of what they are.

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Get all shellcode on binary file from objdump

Better than the others, and actually works unlike some of them.

Get the time from NIST.GOV

The format is JJJJJ YR-MO-DA HH:MM:SS TT L DUT1 msADV UTC(NIST) OTM and is explained more fully here: http://tf.nist.gov/service/acts.htm

Remove Suspend option from XFCE logoff dialog

recursive reset file/dir perms

Good for fixing web permissions. You might also want to do something like this and skip files or directories that begin with a period: $ find public_html/stuff -not -name ".*" $ -type d -exec chmod 755 {} + -o -type f -exec chmod 644 {} + $ ...or include a special case for scripts: $ find public_html/stuff -type d -exec chmod 755 {} + -or -type f -name "*.pl" -exec chmod 755 {} + -or -exec chmod 644 {} +

Convert embedded spaces in filenames to "_" (underscore)

This command converts filenames with embedded spaces in the current directory replacing spaces with the underscore ("_") character.

Find the most recently changed files (recursively)

Phrack 66 is out, but the .tar.gz is not there yet on phrack.org's website

Nice reading in the morning on the way to work, but sadly the .tar.gz for the whole issue 66 is not on phrack's website yet. So use wget to download.

Cleanly manage tempfiles in scripts

Cleanly create tempfiles using mktemp and remove them using traps instead of removing them in the end of the script. This way, you make sure the tempfiles are removed properly even if the script is killed or interrupted. For a user script in KDE4, you can set TMPROOT using : $ TMPROOT=$(kde4-config --path tmp)

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Commands using sed (1,319)

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