Commands using sed sorted by votes

Commands using sed (1,319)

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Get Lorum Ipsum random text from lorumipsum.com

This will generate 3 paragraphs with random text. Change the 3 to any number. Show Sample Output

lynx -source http://www.lipsum.com/feed/xml?amount=3|perl -p -i -e 's/\n/\n\n/g'|sed -n '/<lipsum>/,/<\/lipsum>/p'|sed -e 's/<[^>]*>//g'

houghi · 2010-04-26 17:26:44 5

Prepare a commandlinefu command.

This command will format your alias or function to a single line, trimming duplicate white space and newlines and inserting delimiter semi-colons, so it continues to work on a single line. Show Sample Output
This is sample output - yours may be different.
```
root@ballgag ~ % tail -n4 .bashrc # newlines to spaces break code
goclf()
{
  type "$1" | sed '1d' | tr -d "\n" | tr -s '[:space:]'; echo
}
root@ballgag ~ % type goclf # command will work, but unneeded space
goclf is a function
goclf () 
{ 
    type "$1" | sed '1d' | tr -d "\n" | tr -s '[:space:]';
    echo
}
root@ballgag ~ % goclf goclf # elegant
goclf () { type "$1" | sed '1d' | tr -d "\n" | tr -s '[:space:]'; echo}
```
5

goclf() { type "$1" | sed '1d' | tr -d "\n" | tr -s '[:space:]'; echo }

meathive · 2010-06-26 21:44:17 17

Get all shellcode on binary file from objdump

Tired copy paste to get opcode from objdump huh ? Get more @ http://gunslingerc0de.wordpress.com Show Sample Output

This is sample output - yours may be different.

gunslinger@localhost:~/$ objdump -d shell

shell:     file format elf32-i386


Disassembly of section .text:

08048060 <.text>:
 8048060:	31 c0                	xor    %eax,%eax
 8048062:	31 db                	xor    %ebx,%ebx
 8048064:	31 c9                	xor    %ecx,%ecx
 8048066:	31 d2                	xor    %edx,%edx
 8048068:	b0 46                	mov    $0x46,%al
 804806a:	31 db                	xor    %ebx,%ebx
 804806c:	31 c9                	xor    %ecx,%ecx
 804806e:	cd 80                	int    $0x80
 8048070:	b0 0b                	mov    $0xb,%al
 8048072:	53                   	push   %ebx
 8048073:	68 2f 2f 73 68       	push   $0x68732f2f
 8048078:	68 2f 62 69 6e       	push   $0x6e69622f
 804807d:	89 e3                	mov    %esp,%ebx
 804807f:	31 c9                	xor    %ecx,%ecx
 8048081:	31 c9                	xor    %ecx,%ecx
 8048083:	53                   	push   %ebx
 8048084:	cd 80                	int    $0x80
gunslinger@localhost:~/$ objdump -d ./shell|grep '[0-9a-f]:'|grep -v 'file'|cut -f2 -d:|cut -f1-6 -d' '|tr -s ' '|tr '\t' ' '|sed 's/ $//g'|sed 's/ /\\x/g'|paste -d '' -s |sed 's/^/"/'|sed 's/$/"/g'
"\x31\xc0\x31\xdb\x31\xc9\x31\xd2\xb0\x46\x31\xdb\x31\xc9\xcd\x80\xb0\x0b\x68\x2f\x2f\x73\x68\x68\x2f\x62\x69\x6e\x89\xe3\x31\xc9\x31\xc9\xcd\x80\x31\xc0\xb0\x0b\x31\xdb\xcd\x80"
gunslinger@localhost:~/$

-------------------------------shellcodetest.c---------------------------------
char shellcode[] = "\x31\xc0\x31\xdb\x31\xc9\x31\xd2\xb0\x46\x31\xdb\x31"
		   "\xc9\xcd\x80\xb0\x0b\x53\x68\x2f\x2f\x73\x68\x68\x2f"
		   "\x62\x69\x6e\x89\xe3\x31\xc9\x31\xc9\x53\xcd\x80";

int main(void)
{
	(*(void(*)()) shellcode)();
}
------------------------------------EOF----------------------------------------

root@localhost:/home/gunslinger/# vim shellcodetest.c
root@localhost:/home/gunslinger/# cat shellcodetest.c
char shellcode[] = "\x31\xc0\x31\xdb\x31\xc9\x31\xd2\xb0\x46\x31\xdb\x31"
		   "\xc9\xcd\x80\xb0\x0b\x53\x68\x2f\x2f\x73\x68\x68\x2f"
		   "\x62\x69\x6e\x89\xe3\x31\xc9\x31\xc9\x53\xcd\x80";

int main(void)
{
	(*(void(*)()) shellcode)();
}
root@localhost:/home/gunslinger/# gcc -o shellcodetest shellcodetest.c
root@localhost:/home/gunslinger/# chown root:root shellcodetest.c
root@localhost:/home/gunslinger/# chmod 4755 shellcodetest
root@localhost:/home/gunslinger/# exit
gunslinger@localhost:~/$ ./shellcodetest
# id
uid=0(root) gid=1000(gunslinger) groups=4(adm),20(dialout),24(cdrom),46(plugdev),106(lpadmin),121(admin),122(sambashare),1000(gunslinger)
# whoami
root
# echo GAMEOVER
GAMEOVER
# exit
gunslinger@localhost:~/$

gunslinger_ · 2010-07-11 15:44:48 112

Convert ascii string to hex

If you're going to use od, here's how to suppress the labels at the beginning. Also, it doesn't output the \x, hence the sed command at the end. Remove it for space separated hex values instead Show Sample Output
This is sample output - yours may be different.
```
\x74\x65\x78\x74
```
5

echo -n "text" | od -A n -t x1 |sed 's/ /\\x/g'

camocrazed · 2010-07-14 15:31:36 8
Remove color codes (special characters) with sed
This is sample output - yours may be different.
5

sed -r "s:\x1B\[[0-9;]*[mK]::g"'

roylez · 2010-07-22 05:37:25 6
livehttpheaders (firefox addon) replacement

Default output-file is "liveh.txt". This uses only BRE, in case you're using an older version of sed(1) that doesn't have support for ERE added. With a modern sed(1), to reduce false positive matches, you might do something like: liveh(){ tcpdump -lnnAs512 -i ${1-} tcp |sed 's/.*GET /GET /;s/.*Host: /Host: /;s/.*POST /POST /;/GET |Host: |POST /!d;/[\"'"'"]/d;/\.\./d;w '"${2-liveh.txt}"'' >/dev/null ;} Anyway, it's easy to clean up the output file with sed(1) later.
This is sample output - yours may be different.
5

liveh(){ tcpdump -lnAs512 ${1-} tcp |sed ' s/.*GET /GET /;s/.*Host: /Host: /;s/.*POST /POST /;/[GPH][EOo][TSs]/!d;w '"${2-liveh.txt}"' ' >/dev/null ;} # usage: liveh [-i interface] [output-file] && firefox &

argv · 2010-10-11 01:01:11 3
Google Translate

substitute "example" with desired string; tl = target language (en, fr, de, hu, ...); you can leave sl parameter as-is (autodetection works fine) Show Sample Output
This is sample output - yours may be different.
```
exemple de traduction
```
5

wget -U "Mozilla/5.0" -qO - "http://translate.google.com/translate_a/t?client=t&text=translation+example&sl=auto&tl=fr" | sed 's/\[\[\[\"//' | cut -d \" -f 1

sairon · 2011-03-06 13:46:16 109
remove empty lines in place with backup

Modify file in place to remove empty lines and create a backup of the original with the extension .bak Show Sample Output
This is sample output - yours may be different.
```
$ls
filewithempty.lines  filewithempty.lines.bak
```
5

sed -e '/^$/d' -i .bak filewithempty.lines

donnoman · 2011-03-24 00:03:25 6
Get a BOFH excuse

Gets a BOFH excuse from the BOFH excuse server (towel.blinkenlights.nl port 666), and passes it through sed and tr to get rid of telnet connection stuff. Show Sample Output
This is sample output - yours may be different.
```
According to Microsoft, it's by design
```
5

telnet towel.blinkenlights.nl 666 | sed "s/=== The BOFH Excuse Server ===//" | tr -d '\n' && echo

hintss · 2011-03-31 05:50:57 3

Get International Space Station sighting information for your city

This command outputs a table of sighting opportunities for the International Space Station. Find the URL for your city here: http://spaceflight.nasa.gov/realdata/sightings/ Show Sample Output

links -dump "http://spaceflight.nasa.gov/realdata/sightings/cities/view.cgi?country=United_States&region=Wisconsin&city=Portage" | sed -n '/--/,/--/p'

eightmillion · 2011-05-03 12:15:56 7

full memcache client in under 255 chars (uses dd, sed and nc)

usage: mem memcache-command [arguments] where memcache-command might be: set add get[s] append prepend replace delete incr decr cas stats verbosity version notes: exptime argument is set to 0 (no expire) flags argument is set to 1 (arbitrary)
This is sample output - yours may be different.
5

mem(){ { case $1 in st*|[vgid]*) printf "%s " "$@";; *) dd if=$3 2>&1|sed '$!d;/^0/d;s/ .*//;s/^/'"$1"' '"$2"' 1 0 /; r '"$3"'' 2>/dev/null;;esac;printf "\r\nquit\r\n";}|nc -n 127.0.0.1 11211; }

argv · 2011-06-17 06:39:07 6
Prepend a text to a file.

Using the sed -i (inline), you can replace the beginning of the first line of a file without redirecting the output to a temporary location.
This is sample output - yours may be different.
5

sed -i '1s/^/text to prepend\n/' file1

xeor · 2011-06-25 12:02:11 14
Search and Replace across multiple files

- grep for the word in a files, use recursion (to find files in sub directories), and list only file matches -| xargs passes the results from the grep command to sed -sed -i uses a regular expression (regex) to evaluate the change: s (search) / search word / target word / g (global replace)
This is sample output - yours may be different.
5

grep -lr -e '<oldword>' * | xargs sed -i 's/<oldword>/<newword>/g'

o0110o · 2011-08-27 02:42:51 7
regex for turning a URL into a real hyperlink (i.e. for posting somewhere that accepts basic html)

This should work with anything://url.whatever etc etc ;)
This is sample output - yours may be different.
5

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

c3w · 2012-01-04 02:08:29 7
Use top to monitor only all processes with the same name fragment 'foo'

pgrep foo may return several pids for process foobar footy01 etc. like this: 11427 12576 12577 sed puts "-p " in front and we pass a list to top: top -p 11427 -p 12576 -p 12577
This is sample output - yours may be different.
5

top $(pgrep foo | sed 's|^|-p |g')

michelsberg · 2012-06-14 15:13:00 3
run shell with your commandlinefu.com's favourites as bash_history

This makes your commandlinefu.com's favorites appear as most recent commands in your history.
This is sample output - yours may be different.
5

(cat ~/.bash_history;U='curl -s www.commandlinefu.com';$U/users/signin -c/tmp/.c -d'username=<USER>&password=<PASS>&submit=1'|$U/commands/favourites/json -b/tmp/.c|grep -Po 'nd":.*?[^\\]",'|sed -re 's/.*":"(.*)",/\1/g')>~/.h;HISTFILE=~/.h bash --login

xenomuta · 2012-08-17 12:31:51 34
Encrypt and password-protect execution of any bash script

(Please see sample output for usage) script.bash is your script, which will be crypted to script.secure script.bash --> script.secure You can execute script.secure 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. Show Sample Output
This is sample output - yours may be different.
```
$ cat script.bash 

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

$ echo "eval \"\$(dd if=\$0 bs=1 skip=XX 2>/dev/null|gpg -d 2>/dev/null)\"; exit" > script.secure; sed -i s:XX:$(stat -c%s script.secure): script.secure; gpg -c < script.bash >> script.secure; chmod +x script.secure
Enter passphrase:
Repeat passphrase:

$ ./script.secure 
Enter passphrase:

Hello, world

$ cat script.secure 
eval "$(dd if=$0 bs=1 skip=69 2>/dev/null|gpg -d 2>/dev/null)"; exit
%6&A2%&F%&B%&%4&%
```
5

echo "eval \"\$(dd if=\$0 bs=1 skip=XX 2>/dev/null|gpg -d 2>/dev/null)\"; exit" > script.secure; sed -i s:XX:$(stat -c%s script.secure): script.secure; gpg -c < script.bash >> script.secure; chmod +x script.secure

rodolfoap · 2013-03-09 11:16:48 20
Graphically show percent of mount space used

Automatically drops mount points that have non-numeric sizes (e.g. /proc). Tested in bash on Linux and AIX. Show Sample Output
This is sample output - yours may be different.
```
/                        ============= 13
/var                     ================== 18
/home                    ============================================ 44
/tmp                     == 2
/boot                    ====== 6
/dev/shm                  0
```
5

for m in `df -P | awk -F ' ' '{print $NF}' | sed -e "1d"`;do n=`df -P | grep "$m$" | awk -F ' ' '{print $5}' | cut -d% -f1`;i=0;if [[ $n =~ ^-?[0-9]+$ ]];then printf '%-25s' $m;while [ $i -lt $n ];do echo -n '=';let "i=$i+1";done;echo " $n";fi;done

drockney · 2013-07-29 20:12:39 6
Convert a script to one-liner

Opposite: Convert an one-liner to script: foo() { <one-liner> ; } ... typeset -f foo ... unset -f foo
This is sample output - yours may be different.
5

(sed 's/#.*//g'|sed '/^ *$/d'|tr '\n' ';'|xargs echo) < script.sh

knoppix5 · 2013-10-26 23:23:51 16
Shows cpu load in percent

Show the current load of the CPU as a percentage. Read the load from /proc/loadavg and convert it using sed: Strip everything after the first whitespace: sed -e 's/ .*//' Delete the decimal point: sed -e 's/\.//' Remove leading zeroes: sed -e 's/^0*//' Show Sample Output
This is sample output - yours may be different.
```
$ cat /proc/loadavg
7.73 7.51 3.42 1/416 8168
$ sed -e 's/ .*//' -e 's/\.//' -e 's/^0*//' /proc/loadavg
773
```
5

sed -e 's/ .*//' -e 's/\.//' -e 's/^0*//' /proc/loadavg

flatcap · 2014-04-18 19:12:05 10
Get simple weather info from a zip code

weather 97405 Show Sample Output
This is sample output - yours may be different.
```
Eugene, OR | 55.1 degrees F | Clear
```
5

weather() { curl -s "http://www.wunderground.com/q/zmw:$1.1.99999" | grep "og:title" | cut -d\" -f4 | sed 's/°/ degrees F/'; }

cadejscroggins · 2015-09-19 07:57:47 12
Change every instance of OLD to NEW in file FILE

Very quick way to change a word in a file. I use it all the time to change variable names in my PHP scripts (sed -i 's/$oldvar/$newvar/g' index.php)
This is sample output - yours may be different.
4

sed -i 's/OLD/NEW/g' FILE

nanexcool · 2009-02-05 18:07:41 26
Delete line number 10 from file

Very useful when the ssh key of a host has changed and ssh refuses to connect to the machine, while giving you the line number that has changed in ~/.ssh/known_hosts.
This is sample output - yours may be different.
4

sed -i '10d' <somefile>

raphink · 2009-02-16 15:05:29 160
remove leading blank lines
This is sample output - yours may be different.
4

sed '/./,$!d'

grep · 2009-02-16 20:39:40 9
Convert Unix newlines to DOS newlines

The ctrl+v,ctrl+m portion represents key presses that you should do. If you do it successfully you should see a ^M character appear.
This is sample output - yours may be different.
4

sed 's/$/<ctrl+v><ctrl+m>/'

SiegeX · 2009-02-16 20:53:05 12
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What's this?

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check open ports without netstat or lsof

SSH tunneling self-connection

- port 8080 on localhost will be a SOCKSv5 proxy - at localhost:localport1 you will be connected to the external source server1:remoteport1 and at bind_address2:localport2 to server2:remoteport2 - you will be using only IPv4 and arcfour/blowfish-cbc, in order to speed up the tunnel - if you lose the connection, autossh will resume it at soon as possible - the tunnel is here a background process, wiithout any terminal window open

Get a list of ssh servers on the local subnet

--open -sV is not needed if you are only looking for hosts with 22 open

Find the package that installed a command

Remove a file whose name begins with a dash ( - ) character

Using the redundant ./ directory information prevents the dash from occurring at the beginning of the filename, and being interpreted as an option of the rm command. Also works using: $ rm -- -filename

drill holes on image

Get the dir listing of an executable without knowing its location

Get My Public IP Address

Not a kismet replacement...

If you're like some individuals who rely on ndiswrapper and cannot use kismet, this command may be of service. watch -n .5 "iwlist wlan0 scan | egrep 'ESSID|Encryption'" Or... watch -n .5 "iwlist wlan0 scan | egrep 'ESSID|Encryption' | egrep 'linksys'" :-) Hopefully you'll find some dd-wrt compatible routers.

Write a shell script that removes files that contain a string

Deletes files in the current directory or its subdirectories that match "regexp" but handle directories, newlines, spaces, and other funky characters better than the original #13315. Also uses grep's "-q" to be quiet and quit at the first match, making this much faster. No need for awk either.

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Commands using sed (1,319)

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