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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Make ISO image of a folder

Create ISO image of a folder in Linux. You can assign label to ISO image and mount correctly with -allow-lowercase option.

calulate established tcp connection of local machine

If you want prepend/append text just wrap in echo: $echo Connected: `netstat -an|grep -ci "tcp.*established"`

password recovery on debian

Appended to grub boot parameters ... gives shell ... password recovery

Skip banner on ssh login prompt

This allows you to skip the banner (usually /etc/issue.net) on ssh connections. Useful to avoid banners outputted to your mail by rsync cronjobs.

Show running services (using systemctl)

Re-use the previous command output

The $(!!) will expand to the previous command output (by re-running the command), which becomes the parameter of the new command newcommand.

Run the last command as root

Same as `sudo !!`. If you do not have permission to be sudo or sudo does not installed on your system, you can use this.

Recursively move folders/files and preserve their permissions and ownership perfectly

Find the package that installed a command

Print just line 4 from a textfile

Prints the 4th line and then quits. (Credit goes to flatcap in comments: http://www.commandlinefu.com/commands/view/6031/print-just-line-4-from-a-textfile#comment.)

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Commands using grep (1,935)

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