Commands using sed sorted by votes

Commands using sed (1,319)

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Auto Get Missing Launchpad Keys

You can choose these mirror servers to get gpg keys, if the official one ever goes offline keyserver.ubuntu.com pool.sks-keyservers.net subkeys.pgp.net pgp.mit.edu keys.nayr.net keys.gnupg.net wwwkeys.en.pgp.net #(replace with your country code fr, en, de,etc)
This is sample output - yours may be different.
6

sudo apt-get update 2> /tmp/keymissing; for key in $(grep "NO_PUBKEY" /tmp/keymissing |sed "s/.*NO_PUBKEY //"); do echo -e "\nProcessing key: $key"; gpg --keyserver pool.sks-keyservers.net --recv $key && gpg --export --armor $key |sudo apt-key add -; done

Bonster · 2011-03-30 08:18:54 8
Remove a line from a file using sed (useful for updating known SSH server keys when they change)
This is sample output - yours may be different.
6

sed -i '${LINE}d' ~/.ssh/known_host

richard · 2012-01-19 11:22:45 7
generate 30 x 30 matrix

or od /dev/urandom -w60 -An|sed 's/ ..../ /g'|head -n 30 (this one lacks digits 8 and 9)
This is sample output - yours may be different.
6

hexdump -v -e '"%u"' </dev/urandom|fold -60|head -n 30|sed 's/$.\{2\}$/\1 /g'

knoppix5 · 2013-02-16 12:56:24 4
Encrypt and password-protect execution of any bash script, Version 2

(Please see sample output for usage) Use any script name (the read command gets it) and it will be encrypted with the extension .crypt, i.e.: myscript --> myscript.crypt You can execute myscript.crypt only if you know the password. If you die, your script dies with you. If you modify the startup line, be careful with the offset calculation of the crypted block (the XX string). Not difficult to make script editable (an offset-dd piped to a gpg -d piped to a vim - piped to a gpg -c directed to script.new ), but not enough space to do it on a one liner. Sorry for the chmod on parentheses, I dont like "-" at the end. Thanks flatcap for the subshell abbreviation to /dev/null Show Sample Output
This is sample output - yours may be different.
```
$ cat script.bash

#!/bin/bash
echo "hello, world"

$ read -p 'Script: ' S && C=$S.crypt H='eval "$(dd if=$0 bs=1 skip=// 2>/dev/null|gpg -d 2>/dev/null)"; exit;' && gpg -c<$S|cat >$C <(echo $H|sed s://:$(echo "$H"|wc -c):) - <(chmod +x $C)

Script: script.bash
Enter passphrase:
Repeat passphrase:

$ cat script.bash.crypt 

eval "$(dd if=$0 bs=1 skip=70 2>/dev/null|gpg -d 2>/dev/null)"; exit;
%3@5%7%f$2&s*ty7%8@j$j!8)(&@@@

$ ./script.bash.crypt 
Enter passphrase:

hello, world
```
6

read -p 'Script: ' S && C=$S.crypt H='eval "$((dd if=$0 bs=1 skip=//|gpg -d)2>/dev/null)"; exit;' && gpg -c<$S|cat >$C <(echo $H|sed s://:$(echo "$H"|wc -c):) - <(chmod +x $C)

rodolfoap · 2013-03-10 08:59:45 13
separate (emphasize) digital strings from other text

Show Sample Output
This is sample output - yours may be different.
```
echo 17krava177konja|sed 's/[0-9]\+/ [&] /g'
 [17] krava [177] konja
```
6

sed 's/[0-9]\+/ [&] /g'

knoppix5 · 2014-09-18 18:25:55 15
remove ^M characters from file using sed

removing ^M characters from file with sed
This is sample output - yours may be different.
6

sed 's/\r//g' < input.txt > output.txt

aysadk · 2019-04-20 22:27:35 58
Find dupe files by checking md5sum
This is sample output - yours may be different.
6

find /glftpd/site/archive -type f|grep '([0-9]\{1,9\})\.[^.]\+$'|parallel -n1 -j200% md5sum ::: |awk 'x[$1]++ { print $2 " :::"}'|sed 's/^/Dupe: /g'|sed 's,Dupe,\x1B[31m&\x1B[0m,'

wuseman1 · 2019-10-22 16:02:15 150
Print with tabular
This is sample output - yours may be different.
6

head -4 /etc/passwd | tr : , | sed -e 's/^/| /' -e 's/,/,| /g' -e 's/$/,|/' | column -t -s,

wuseman1 · 2022-04-22 03:03:15 1009
restore the contents of a deleted file for which a descriptor is still available

Note that the file at the given path will have the contents of the (still) deleted file, but it is a new file with a new node number; in other words, this restores the data, but it does not actually "undelete" the old file. I posted a function declaration encapsulating this functionality to http://www.reddit.com/r/programming/comments/7yx6f/how_to_undelete_any_open_deleted_file_in_linux/c07sqwe (please excuse the crap formatting).
This is sample output - yours may be different.
5

N="filepath" ; P=/proc/$(lsof +L1 | grep "$N" | awk '{print $2}')/fd ; ls -l $P | sed -rn "/$N/s/.*([0-9]+) ->.*/\1/p" | xargs -I_ cat $P/_ > "$N"

laburu · 2009-02-21 02:31:24 28
Play musical notes from octave of middle C

Are there any creative pieces of music that can be created using beep and the shell? I'd love to hear it!
This is sample output - yours may be different.
5

man beep | sed -e '1,/Note/d; /BUGS/,$d' | awk '{print $2}' | xargs -IX sudo beep -f X -l 500

jnash · 2009-04-01 06:48:48 10
get the top 10 longest filenames
This is sample output - yours may be different.
5

find | sed -e "s/^.*\///" | awk ' BEGIN { FS=""} { print NF " " $0 } ' | sort -nrf | head -10

nitehawk · 2009-04-13 21:03:07 5
Simplification of "sed 'your sed stuff here' file > file2 && mv file2 file"
This is sample output - yours may be different.
5

sed -i 'your sed stuff here' file

Keruspe · 2009-05-19 15:35:42 5
Apply substitution only on the line following a marker

I've been auto-generating some complex GnuPlots; with multiplots the first plot of each group needs to be a 'plot' whereas the others need to be 'replots' to allow overplotting/autoscaling/etc to work properly. This is used to replace only the first instance of 'replot'. Show Sample Output
This is sample output - yours may be different.
```
$ cat test.plt
# set up gnuplot with some undetermined number of commands

#MARKER
replot "file1.dat" using 1:2
replot "file2.dat" using 1:2
replot "file3.dat" using 1:2

$ sed '/^#MARKER/{N;s/replot/plot/}' test.plt
# set up gnuplot with some undetermined number of commands

#MARKER
plot "file1.dat" using 1:2
replot "file2.dat" using 1:2
replot "file3.dat" using 1:2
```
5

sed '/MARKER/{N;s/THIS/THAT/}'

mungewell · 2009-06-12 02:29:50 4
Get Futurama quotations from slashdot.org servers

slashdot.org webserver adds an X-Bender or X-Fry HTTP header to every response! Show Sample Output
This is sample output - yours may be different.
```
Bender: Emotions are dumb and should be hated.
```
5

echo -e "HEAD / HTTP/1.1\nHost: slashdot.org\n\n" | nc slashdot.org 80 | egrep "Bender|Fry" | sed "s/X-//"

ricardoarguello · 2009-07-30 19:15:07 3
Download Apple movie trailers

Copy the link to an HD movie trailer in to this command. It's more eleganant if it's put in a to a script, taking the URL as input.
This is sample output - yours may be different.
5

wget -U "QuickTime/7.6.2 (qtver=7.6.2;os=Windows NT 5.1Service Pack 3)" `echo http://movies.apple.com/movies/someHDmovie_720p.mov | sed 's/$[0-9][0-9]$0p/h\10p/'`

deadrabbit · 2009-08-29 00:29:40 21
Get the total length of all videos in the current dir in H:m:s

You're behind on your TV catch-up, but how far behind? This command tries to open mplayer against all files in the current dir. If it's a video file it will contain ID_LENGTH, which is summed and output in hours, minutes and seconds. Someone better at awk could probably reduce this down a lot. Show Sample Output
This is sample output - yours may be different.
```
30529.18
8h:28m:49s
```
5

mplayer -vo dummy -ao dummy -identify * 2>&1 | grep ID_LENGTH | sed 's/.*=$[0-9]*$/\1/' | xargs echo | sed 's/ /+/g' | bc | awk 'S=$1; {printf "%dh:%dm:%ds\n",S/(60*60),S%(60*60)/60,S%60}'

Strawp · 2009-09-24 10:33:19 6
Backup all MySQL Databases to individual files

No need to loop when we have `xargs`. The sed command filters out the first line of `show databases` output, which is always "Database".
This is sample output - yours may be different.
5

mysql -e 'show databases' | sed -n '2,$p' | xargs -I DB 'mysqldump DB > DB.sql'

mislav · 2009-09-25 08:43:06 9
Comment out a line in a file

This will comment out a line, specified by line number, in a given file.
This is sample output - yours may be different.
5

sed -i '19375 s/^/#/' file

BoxingOctopus · 2009-10-07 17:50:40 7

Calculates the size on disk for each package installed on the filesystem (or removed but not purged). This is missing the | sort -rn which would put the biggest packges on top. That was purposely left out as the command is slightly on the slow side Also you may need to run this as root as some files can only be checked by du if you can read them ;) Show Sample Output

This is sample output - yours may be different.

176     acl                                                                                                                                     
44      acpi                                                                                                                                    
396     acpi-support                                                                                                                            
32      acpi-support-base                                                                                                                       
108     acpid                                                                                                                                   
524     adduser                                                                                                                                 
408     akonadi-server                                                                                                                          
2416    akregator                                                                                                                               
388     alsa-base                                                                                                                               
1840    alsa-utils                                                                                                                              
1860    amor                                                                                                                                    
96      anacron                                                                                                                                 
120     apmd                                                                                                                                    
4512    apt                                                                                                                                     
104     apt-file                                                                                                                                
376     apt-utils                                                                                                                               
140     apt-xapian-index                                                                                                                        
9184    aptitude                                                                                                                                
112     at                                                                                                                                      
104     avahi-autoipd                                                                                                                           
252     avahi-daemon                                                                                                                            
260     base-files                                                                                                                              
100     base-passwd                                                                                                                             
du: cannot access `diverted by dash to: /usr/share/man/man1/sh.distrib.1.gz': No such file or directory                                         
du: cannot access `diverted by dash to: /bin/sh.distrib': No such file or directory

dpkg --get-selections | cut -f1 | while read pkg; do dpkg -L $pkg | xargs -I'{}' bash -c 'if [ ! -d "{}" ]; then echo "{}"; fi' | tr '\n' '\000' | du -c --files0-from - | tail -1 | sed "s/total/$pkg/"; done

pykler · 2009-10-12 14:57:54 5

Perform sed substitution on all but the last line of input

In this simple example the command will add a comma to the end of every line except the last. I found this really useful when programatically constructing sql scripts. See sample output for example. Show Sample Output
This is sample output - yours may be different.
```
$ cat myfile.txt
cola
colb
colc
$ sed -e "$ ! s/$/,/" myfile.txt
cola,
colb,
colc
```
5

sed -e "$ ! s/$/,/"

jgc · 2009-10-13 10:13:52 7
Remove color codes (special characters) with sed

Removes ANSI color and end of line codes to the [{attr1};...;{attrn}m format.
This is sample output - yours may be different.
5

sed -r "s/\x1B\[([0-9]{1,3}((;[0-9]{1,3})*)?)?[m|K]//g

vaejovis · 2009-11-03 00:34:06 6
extract plain text from MS Word docx files

Tested on MacOS X
This is sample output - yours may be different.
5

unzip -p some.docx word/document.xml | sed -e 's/<[^>]\{1,\}>//g; s/[^[:print:]]\{1,\}//g'

putnamhill · 2009-12-10 15:13:33 12
Detect Language of a string

Usage: detectlanguage <phrase> Example: detectlanguage hola
This is sample output - yours may be different.
5

detectlanguage(){ curl -s "http://ajax.googleapis.com/ajax/services/language/detect?v=1.0&q=$@" | sed 's/{"responseData": {"language":"$[^"]*$".*/\1\n/'; }

matthewbauer · 2010-03-08 03:24:56 7
show git commit history
This is sample output - yours may be different.
5

git reflog show | grep '}: commit' | nl | sort -nr | nl | sort -nr | cut --fields=1,3 | sed s/commit://g | sed -e 's/HEAD*@{[0-9]*}://g'

jimthunderbird · 2010-03-09 07:44:05 4
Pronounce an English word using Merriam-Webster.com

The original was a little bit too complicated for me. This one does not use any variables.
This is sample output - yours may be different.
5

pronounce(){ wget -qO- $(wget -qO- "http://www.m-w.com/dictionary/$@" | grep 'return au' | sed -r "s|.*return au$'([^']*)', '([^'])[^']*'$.*|http://cougar.eb.com/soundc11/\2/\1|") | aplay -q; }

matthewbauer · 2010-03-12 17:44:16 6
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a short counter

Maybe you know shorter ?

Check if a process is running

Send signal 0 to the process. The return status ($?) can be used to determine if the process is running. 0 if it is, non-zero otherwise.

lazy SQL QUERYING

This is regarding the command 8263 using an alias to fill in command line options for psql. You can actually just type 'psql'. In order for that to work, you want to set environment variables PGDATABASE, PGHOST, PGUSER, and (except you're using the default) PGPORT. Also, you can add a line "host:port:dbname:user:password" (asterisk ok in some columns) to your ~/.pgpass file. Finally, if you don't like the aligned columns, you can add the line "\pset format unaligned" to your ~/.psqlrc file.

Find files containing string and open in vim

I often use "vim -p" to open in tabs rather than buffers.

Convert wmv into avi

Get your IP addresses

Shows the interface and the ip-address

Get first Git commit hash

https://git.kernel.org/cgit/git/git.git/commit/?id=ad5aeeded3295589b2573b143f754762a56f8f82

Get the next weekday for an 'at' command

Line can be modified as needed. This considers weekdays to be Mon-Fri. If run any working day it'll provide a parameters for the next working day for "at". "beep" provided as a sample command. This can be modified easily to include wait time. If you need something to run "D" days after today: # D=4;if [ $(date +%u --date="${D} days") -lt 5 ];then AT="+${D} days";else AT="next monday";fi; echo "beep" | at noon ${AT}

Get the current gold price

Returns the current price of a troy ounce of gold, in USD. Requires the "jq" JSON parser.

Find top 10 largest files in /var directory (subdirectories and hidden files included )

Same as above, but modified to show human readable output

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Commands using sed (1,319)

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