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
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cd to (or operate on) a file across parallel directories

This is useful for quickly jumping around branches in a file system, or operating on a parellel file. This is tested in bash. cd to (substitute in PWD, a for b) where PWD is the bash environmental variable for the "working directory"

cut audio file

find with high precission (nanoseconds 1/1,000,000,000s) the last changed file.

this is good for variables if you have many script created files and if you want to know which one is the last created/changed one..

Get file access control list

Find usb device in realtime

Using this command you can track a moment when usb device was attached.

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"

Create a single-use TCP (or UDP) proxy

Redirect the local port 2000 to the remote port 3000. The same but UDP: $ nc -u -l -p 2000 -c "nc -u example.org 3000" It may be used to "convert" TCP client to UDP server (or viceversa): $ nc -l -p 2000 -c "nc -u example.org 3000"

Reconstruct standard permissions for directories and files in current directory

Backup sda5 partition to ftp ( using pipes and gziped backup )

Number of commits per day in a git repository

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Commands using grep (1,935)

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