Commands using grep sorted by votes

Commands using grep (1,935)

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List only directories, one per line

Normally, if you just want to see directories you'd use brianmuckian's command 'ls -d *\', but I ran into problems trying to use that command in my script because there are often multiple directories per line. If you need to script something with directories and want to guarantee that there is only one entry per line, this is the fastest way i know Show Sample Output
This is sample output - yours may be different.
```
seth@Laptop:~$ ls -l | grep ^d  | sed 's:.*\ ::g'
Downloads
Music
Pictures
Videos
VMs
bin
block
qBT_dir
warlord
xp
evil_stuff
seth@Laptop:~$ 
```
-10

ls -l | grep ^d | sed 's:.*\ ::g'

LinuxMan · 2011-08-06 23:52:46 9
grep directory and sub-directories
This is sample output - yours may be different.
-10

grep -r <searchterm> *

totti · 2012-02-08 11:48:08 7
get you public ip address
This is sample output - yours may be different.
-11

/usr/bin/lynx -dump http://www.netins.net/dialup/tools/my_ip.shtml | grep -A2 "Your current IP Address is:" | tail -n1 | tr -d ' '|sed '/^$/d'| sed 's/^ *//g'

juanmi · 2010-12-20 15:29:53 4
Delete all files and folders except one file/dir

This command will delete all files and folders except 'skipme'. it could be a file or a folder.
This is sample output - yours may be different.
-11

ls -R | grep -v skipme | xargs rm -Rf

hadifarnoud · 2013-10-18 08:11:39 13
Grep only files matching certain pattern (Advanced)
This is sample output - yours may be different.
-11

find <path> |xargs grep <pattern>

bakhru · 2015-05-30 19:29:25 9
get LAN ip

get the ip address on your LAN Show Sample Output
This is sample output - yours may be different.
```
192.168.1.102
```
-12

ifconfig |grep broadcast | awk '{print $2}'

fotoflo · 2012-12-05 03:57:51 9
for i in $(grep 'mystring' myfile1)|awk '{print $1}'); do grep $1 myfile2;done
This is sample output - yours may be different.
-14

for i in $(grep 'mystring' myfile1)|awk '{print $1}'); do grep $1 myfile2;done

msh · 2011-03-15 16:18:29 5
get cpu info from dmesg

get cpu info from dmesg
This is sample output - yours may be different.
-16

dmesg | grep cpu

kingji · 2009-04-03 01:57:04 8
Combining text files into one file
This is sample output - yours may be different.
-16

ls | grep *.txt | while read file; do cat $file >> ./output.txt; done;

octopus · 2010-04-16 13:19:38 6
عرض اتصالات لبورت محدد

عرض الاتصالات لبورت ٢٢
This is sample output - yours may be different.
-16

netstat -antp | grep 22

WhiteHatsCom · 2010-08-05 15:53:41 9
‹ First < 76 77 78

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nmap IP block and autogenerate comprehensive Nagios service checks

More info here: http://nagioswiki.com/wiki/index.php/Autocreating_Nagios_Configuration_with_Nmap_and_Nmap2Nagios.pl

Terrorist threat level text

This line provides the same result by reading the output of a less arbitrary value. This is a personal choice on the matter, and the result on different machines may vary.

Copy from host 1 to host 2 through your host

Get IP address from domain

shorter (thus better ;-)

a shell function to print a ruler the width of the terminal window.

A similar version for Bash that doesn't require cut and shortens the function in a few places. And it uses local variables. (similar to a version by eightmillion in a comment on the another version)

Save your sessions in vim to resume later

Creates a full snapshot of your current vim session, including tabs, open buffers, cursor positions, everything. Can be resumed with vim -S . Useful for those times when you HAVE to close vim, but you don't want to lose all your hard-opened buffers and windows. The ! will cause vim to overwrite the file if it already exists. It is not necessary, but useful if you frequently save to the same file (like session.vim or something).

Cut out a piece of film from a file. Choose an arbitrary length and starting time.

With: -vcodec, you choose what video codec the new file should be encoded with. Run ffmpeg -formats E to list all available video and audio encoders and file formats. copy, you choose the video encoder that just copies the file. -acodec, you choose what audio codec the new file should be encoded with. copy, you choose the audio encoder that just copies the file. -i originalfile, you provide the filename of the original file to ffmpeg -ss 00:01:30, you choose the starting time on the original file in this case 1 min and 30 seconds into the film -t 0:0:20, you choose the length of the new film newfile, you choose the name of the file created. Here is more information of how to use ffmpeg: http://www.ffmpeg.org/ffmpeg-doc.html

Which processes are listening on a specific port (e.g. port 80)

swap out "80" for your port of interest. Can use port number or named ports e.g. "http"

Find the package that installed a command

Simple MAC Changeing

The 00:11:22:33:44:55 is whatever you want your new MAC address to be. Sometimes sudo should be used in front if you need to.

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Commands using grep (1,935)

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