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Commands tagged grep from sorted by
Terminal - Commands tagged grep - 358 results
netstat -lantp | grep -i stab | awk -F/ '{print $2}' | sort | uniq
2009-09-19 14:54:31
User: ProMole
Functions: awk grep netstat sort
7

Show apps that use internet connection at the moment.

Can be used to discover what programms create internet traffic. Skip the part after awk to get more details, though it will not work showing only unique processes.

This version will work with other languages such as Spanish and Portuguese, if the word for "ESTABLISHED" still contain the fragment "STAB"(e.g. "ESTABELECIDO")

netstat -lantp | grep -i establ | awk -F/ '{print $2}' | sort | uniq
netstat -lantp | grep -i establ | awk -F/ '{print $2}' | uniq | sort
2009-09-19 13:54:36
User: ktoso
Functions: awk grep netstat uniq
-1

Can be used to discover what programms create internet traffic. Skip the part after awk to get more details.

Has anyone an idea why the uniq doesn't work propperly here (see sample output)?

echo 127.0.0.1 | egrep -e '^(([01]?[0-9]{1,2}|2[0-4][0-9]|25[0-4])\.){3}([01]?[0-9]{1,2}|2[0-4][0-9]|25[0-4])$'
2009-09-17 17:40:48
User: arcege
Functions: echo egrep
-1

Handles everything except octets with 255. Ran through ip generator with variable octet lengths.

echo 254.003.032.3 | grep -P '^((25[0-4]|2[0-4]\d|[01]?[\d]?[1-9])\.){3}(25[0-4]|2[0-4]\d|[01]?[\d]?[1-9])$'
2009-09-17 12:59:44
User: foob4r
Functions: echo grep
0

This obey that you don't match any broadcast or network addresses and stay between 1.1.1.1 - 254.254.254.254

echo "123.32.12.134" | grep -P '([01]?\d\d?|2[0-4]\d|25[0-5])\.([01]?\d\d?|2[0-4]\d|25[0-5])\.([01]?\d\d?|2[0-4]\d|25[0-5])\.([01]?\d\d?|2[0-4]\d|25[0-5])'
ack -ai 'searchterm'
find . -type f -exec grep -qi 'foo' {} \; -print0 | xargs -0 vim
2009-09-03 17:55:26
User: arcege
Functions: find grep xargs
Tags: vim find grep
-1

Make sure that find does not touch anything other than regular files, and handles non-standard characters in filenames while passing to xargs.

find . -exec grep foobar /dev/null {} \; | awk -F: '{print $1}' | xargs vi
grep -ir 'foo' * | awk -F '{print $1}' | xargs vim
grep -Hrli 'foo' * | xargs vim
2009-09-03 15:44:05
User: dere22
Functions: grep xargs
Tags: vim sed awk grep
3

The grep switches eliminate the need for awk and sed. Modifying vim with -p will show all files in separate tabs, -o in separate vim windows. Just wish it didn't hose my terminal once I exit vim!!

grep -ir 'foo' * | awk '{print $1}' | sed -e 's/://' | xargs vim
2009-09-03 15:12:27
User: elubow
Functions: awk grep sed xargs
Tags: vim sed awk grep
0

This will drop you into vim to edit all files that contain your grep string.

watch --interval 0 'iptables -nvL | grep -v "0 0"'
2009-08-22 18:18:05
User: Code_Bleu
Functions: grep watch
7

This will allow you to watch as matches occur in real-time. To filter out only ACCEPT, DROP, LOG..etc, then run the following command: watch 'iptables -nvL | grep -v "0 0" && grep "ACCEPT"' The -v is used to do an inverted filter. ie. NOT "0 0"

FFPID=$(pidof firefox-bin) && lsof -p $FFPID | awk '{ if($7>0) print ($7/1024/1024)" MB -- "$9; }' | grep ".mozilla" | sort -rn
2009-08-16 08:58:22
User: josue
Functions: awk grep pidof sort
6

Check which files are opened by Firefox then sort by largest size (in MB). You can see all files opened by just replacing grep to "/". Useful if you'd like to debug and check which extensions or files are taking too much memory resources in Firefox.

IFS=:; find $PATH | grep pattern
2009-08-14 13:38:58
User: camspiers
Functions: find grep
Tags: bash find grep
1

Best to put it in a file somewhere in your path. (I call the file spath)

#!/bin/bash

IFS=:; find $PATH | grep $1

Usage: $ spath php

find . -name "*.[ch]" -exec grep "TODO" {} +
2009-08-13 06:17:22
User: peshay
Functions: find grep
Tags: grep
3

-exec works better and faster then using a pipe

grep -r --include="*.[ch]" pattern .
2009-08-13 01:41:12
User: sitaram
Functions: grep
Tags: grep
10

doesn't do case-insensitive filenames like iname but otherwise likely to be faster

find . -name "*.[ch]" | xargs grep "TODO"
watch "ps auxw | grep [d]efunct"
2009-08-12 08:11:16
User: alvinx
Functions: watch
6

to omit "grep -v", put some brackets around a single character

watch "ps auxw | grep 'defunct' | grep -v 'grep' | grep -v 'watch'"
2009-08-11 12:22:13
Functions: watch
5

Shows all those processes; useful when building some massively forking script that could lead to zombies when you don't have your waitpid()'s done just right.

grep . filename
2009-08-09 05:33:58
Functions: grep
Tags: Linux grep
7

Remove newlines from output.

One character shorter than awk /./ filename and doesn't use a superfluous cat.

To be fair though, I'm pretty sure fraktil was thinking being able to nuke newlines from any command is much more useful than just from one file.

cat filename | grep .
2009-08-09 01:00:59
User: fraktil
Functions: cat grep
Tags: cat Linux grep
3

Pipe any output to "grep ." and blank lines will not be printed.

fetch -q -o - http://ipchicken.com | egrep -o '([[:digit:]]{1,3}\.){3}[[:digit:]]{1,3}'
2009-08-06 11:57:44
User: spackle
Functions: egrep
-1

Same thing as above, just uses fetch and ipchicken.com

find . -type f -print0 | xargs -0 -P 4 -n 40 grep -i foobar
2009-08-05 23:18:44
User: ketil
Functions: find grep xargs
4

xargs -P N spawns up to N worker processes. -n 40 means each grep command gets up to 40 file names each on the command line.

grep -Eho '<[a-ZA-Z_][a-zA-Z0-9_-:]*' * | sort -u | cut -c2-
2009-08-05 21:54:29
User: inkel
Functions: cut grep sort
Tags: sort grep cut xml
0

This one will work a little better, the regular expressions it is not 100% accurate for XML parsing but it will suffice any XML valid document for sure.