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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Outputs files with ascii art in the intended form.

Files containing ascii art (e.g. with .nfo extension) are typically not correctly reproduced at the command line when using cat. With iconv one can easily write a wrapper to solve this: $ #!/bin/bash $ if [ -z "$@" ]; then echo "Usage: $(basename $0) file [file] ..." $ else iconv -f437 -tutf8 "$@"; fi $ exit 0

MySQL dump restore with progress bar and ETA

Display a progress bar while restoring a MySQL dump.

Get AWS temporary credentials ready to export based on a MFA virtual appliance

You might want to secure your AWS operations requiring to use a MFA token. But then to use API or tools, you need to pass credentials generated with a MFA token. This commands asks you for the MFA code and retrieves these credentials using AWS Cli. To print the exports, you can use: `awk '{ print "export AWS_ACCESS_KEY_ID=\"" $1 "\"\n" "export AWS_SECRET_ACCESS_KEY=\"" $2 "\"\n" "export AWS_SESSION_TOKEN=\"" $3 "\"" }'` You must adapt the command line to include: * $MFA_IDis ARN of the virtual MFA or serial number of the physical one * TTL for the credentials

Run a command when a file is changed

Nice info browser

pinfo package provide a nice info alternative based on ncurses.

watch the previous command

If you just executed some long command, like "ps -aefww | grep -i [m]yProcess", and if you don't want to retype it or cycle backwards in history and waste time quoting it, then you can use history substitution.

another tweet function

This version of tweet() doesn't require you to put quotes around the body of your tweet... it also prompts you for password. It will still barf on a '!' character.

Clear your history saved into .bash_history file!

Note the space before the command; that prevents your history eliminating command from being recorded. ' history -c && rm -f ~/.bash_history' Both steps are needed. 'history -c' clears what you see in the history command. 'rm -f ~/.bash_history' deletes the history file in your home directory.

Get absolut path to your bash-script

Another way of doing it that's a bit clearer. I'm a fan of readable code.

Backticks are evil

This is a simple example of using proper command nesting using $() over ``. There are a number of advantages of $() over backticks. First, they can be easily nested without escapes: $ program1 $(program2 $(program3 $(program4))) versus $ program1 `program2 \`program3 \`program4\`\`` Second, they're easier to read, then trying to decipher the difference between the backtick and the singlequote: `'. The only drawback $() suffers from is lack of total portability. If your script must be portable to the archaic Bourne shell, or old versions of the C-shell or Korn shell, then backticks are appropriate, otherwise, we should all get into the habit of $(). Your future script maintainers will thank you for producing cleaner code.

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Commands using grep (1,935)

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