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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Check syntax of remote ruby file

Generat a Random MAC address

Get curenttly playing track in Last.fm radio

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"

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*//'

create directory and set owner/group/mode in one shot

Suppress output of loud commands you don't want to hear from

Suppresses all output to /dev/null. This could be expanded to check for a -l command line option to log the stderr to a file maybe -l file or -l to log to default quietly.log. I'm finding that I use it more often than one would think.

list files recursively by size

Show a curses based menu selector

Not so much handy by itself, but very nice in shell scripts. This makes you a handy ncurses based checklist. Much like terminal installers, just use the arrow keys and hit 'Space' to adjust the selections. Returns all selected tags as strings, with no newline at the end. So, your output will be something like: "one" "two" "three" "four" "etc" For those who prefer bash expansion over gratuitious typing: $ whiptail --checklist "Simple checkbox menu" 12 35 3 $(echo {one,two,three,four}" '' 0"} ) Things to note: The height must includes the outer border and padding: add 7 to however many items you want to show up at the same time. If the status is 1, it will be selected by default. anything else, will be deselected.

Calculate days on which Friday the 13th occurs (inspired from the work of the user justsomeguy)

Friday is the 5th day of the week, monday is the 1st. Output may be affected by locale.

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Commands using grep (1,935)

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