Commands tagged grep sorted by votes

Commands tagged grep (409)

sorted by

Search recursively to find a word in certain file types

-sl : show just file names
This is sample output - yours may be different.
0

find . -iname '*.conf' | xargs grep "searh string" -sl

mesuutt · 2011-08-26 14:58:51 3
Generate an XKCD #936 style 4 word passphrase (fast) w/o apostrophes

Fast and excludes words with apostrophes. For ubuntu, you can use wamerican or wbritish dictionaries, installable through aptitude. Show Sample Output
This is sample output - yours may be different.
```
speculation crazies sox heftier
restfuller geneticists overdo Georgina
chaises masseur procurer grab
```
0

echo $(cat /usr/share/dict/words |grep -v "'"|shuf -n4)

d1v3rdown · 2011-08-31 12:48:14 3
Mark manually deleted files as deleted in svn

Helps if you accidentally deleted files from an svn repo with plain rm and you would like to mark them for svn to delete too.
This is sample output - yours may be different.
0

svn status|grep -iR '^!'|sed 's/!/ /g'|xargs -i svn rm '{}'

erdeszt · 2011-10-06 08:11:25 5
Remove all unused kernels with apt-get

since awk was already there one can use it instead of the 2 greps. might not be faster, but fast enough
This is sample output - yours may be different.
0

apt-get remove $(dpkg -l | awk "/^ii linux-(image|headers)/ && ! /`uname -r`/ {print \$2}")

_john · 2011-10-09 13:58:47 4
move linenumbers of grep output to end of line

Uses sed with a regex to move the linenumbers to the line end. The plain regex (w/o escapes) looks like that: ^([^:]*):(.*) Show Sample Output
This is sample output - yours may be different.
```
import org.apache.log4j.LogManager; 11
import org.apache.log4j.Logger; 12
```
0

grep -n log4j MainPm.java | sed -e 's/^$[^:]*$:$.*$/\2 \1/'

bash_vi · 2011-10-21 12:50:30 3
Get the name or user running the process of specified PID

Gets the current system user running a process with the specified pid Show Sample Output
This is sample output - yours may be different.
```
nssy@yoda:~$ ps aux | grep 3698 | grep -v 'grep' | awk '{ print $1 }'
nssy
```
0

ps aux | grep PID | grep -v 'grep' | awk '{ print $1 }'

nssy · 2011-11-05 04:53:29 3
Get the name or user running the process of specified PID
This is sample output - yours may be different.
0

ps -p pid -o logname |tail -1

grep · 2011-11-21 01:33:02 3
Rekursive Grep on Solaris or AIX Systems without GNU egrep -r funcionality
This is sample output - yours may be different.
0

find . -type f -exec awk '/linux/ { printf "%s %s: %s\n",FILENAME,NR,$0; }' {} \;

Neo23x0 · 2011-11-29 12:32:06 8
Show WebSphere AppServer uid|pid|cell|node|jvms

Tested in bash on AIX & Linux, used for WAS versions 6.0 & up. Sorts by node name. Useful when you have vertically-stacked instances of WAS/Portal. Cuts out all the classpath/optional parameter clutter that makes a simple "ps -ef | grep java" so difficult to sort through. Show Sample Output
This is sample output - yours may be different.
```
wasguy      14221350   ExampleCell1    Node1       WebSphere_Portal
wasguy      11141130   ExampleCell1    Node1       WebSphere_Portal_3
wasguy      11665646   ExampleCell1    Node1       nodeagent
wasguy      1769816    ExampleCell2    Node2       WebSphere_Portal
wasguy      10289222   ExampleCell2    Node2       WebSphere_Portal_3
wasguy      11665646   ExampleCell2    Node2       nodeagent
```
0

ps -ef | grep [j]ava | awk -F ' ' ' { print $1," ",$2,"\t",$(NF-2),"\t",$(NF-1),"\t",$NF } ' | sort -k4

drockney · 2012-01-05 16:05:48 3

find usage

you can find a special things(with defined -iname "*sql*") from in most of one direcroty(for example from both /etc/ and /pentest/) and then you can want to grep only include "map" word Show Sample Output

find /etc/ /pentest/ -type f -iname "*sql*" | grep map

celalerdik · 2012-01-15 13:30:32 3

Show CPU idle and used time

This command displays the CPU idle + used time using stats from /proc/stat. Show Sample Output
This is sample output - yours may be different.
```
idle 	 used
72.4139% 21.1866%
```
0

grep "cpu " /proc/stat | awk -F ' ' '{total = $2 + $3 + $4 + $5} END {print "idle \t used\n" $5*100/total "% " $2*100/total "%"}'

Goez · 2012-01-21 04:12:50 3
Find all FAT-invalid filenames in "."

Find is used to "find" all filenames - grep shows those that are invalid.
This is sample output - yours may be different.
0

find . | grep -E "(\||\\|\?|\*|<|\"|:|>|\+|\[|\])"

dj_bushido · 2012-01-21 17:54:58 3
Find all NTFS-invalid filenames in "."

Find all files under "." that are invalid NTFS filenames. Find locates all files, and grep shows the invalid ones.
This is sample output - yours may be different.
0

find . | grep -E "(\||\\|\?|\*|<|\"|:|>)"

dj_bushido · 2012-01-21 17:59:20 4
Shows the line of the string you want to search for (like in normal grep) plus 'n' number of lines above and below it.
This is sample output - yours may be different.
0

grep -C <no_of_lines> <string>

Chirag64 · 2012-01-21 19:59:55 3
Get the first non-empty line in a text file

Use this command if your file may contain empty lines and you need to optain the first non-empty line.
This is sample output - yours may be different.
0

grep . "$f" | head -n1

captaincomic · 2012-01-27 02:58:07 6
Kill processes associated with PATTERN

Kill all process that concide whit PATTERN Show Sample Output
This is sample output - yours may be different.
```
kill 28310: No such process
```
0

ps -fea | grep PATTERN | awk {'print $2'} | xargs kill -9

luiscachog · 2012-01-27 20:31:36 3
See who are using a specific port

See who is using a specific port. Especially when you're using AIX. In Ubuntu, for example, this can easily be seen with the netstat command. Show Sample Output
This is sample output - yours may be different.
```
Usually a nice list of IP addresses :-)
```
0

netstat -Aan | grep .80 | grep -v 127.0.0.1 | grep EST | awk '{print $6}' | cut -d "." -f1,2,3,4 | sort | uniq

janvanderwijk · 2012-02-03 13:54:11 4
See the total amount of data on an AIX machine

Not figured by me, but a colleague of mine. See the total amount of data on an AIX machine. Show Sample Output
This is sample output - yours may be different.
```
100 GB
```
0

print "$(lsvg -Lo |xargs lsvg -L|grep "TOTAL PPs"|awk -F"(" '{print$2}'|sed -e "s/)//g" -e "s/megabytes/+/g"|xargs|sed -e "s/^/(/g" -e "s/+$/)\/1000/g"|bc ) GB"

janvanderwijk · 2012-02-03 13:58:41 3
Remove superfluous from conf file

Removes comments and blank lines from configuration files, leaving only settings
This is sample output - yours may be different.
0

grep -Ev '^( *$|#)' < conf.file

unixmonkey30404 · 2012-02-03 23:43:43 9
what model of computer I'm using?
This is sample output - yours may be different.
0

sudo dmidecode -s system-product-name

jlaunay · 2012-02-08 11:28:46 3
grep directory and sub-directories

You don't need to use "*", it will fail if the working directory has too many fails due parameter extension, you can simply pass the working directory using ".".
This is sample output - yours may be different.
0

grep -r <searchterm> .

unixmonkey22658 · 2012-02-08 11:58:21 3
grep directory and sub-directories

You don't need to use "*", it will fail if the working directory has too many fails due parameter extension, you can simply pass the working directory using ".".
This is sample output - yours may be different.
0

grep -r <searchterm> .

unixmonkey22658 · 2012-02-08 11:59:17 3
grep directory and sub-directories
This is sample output - yours may be different.
0

rgrep <searchterm> *

kron4eg · 2012-02-08 12:35:45 5
Get IP address from Tor exit-node

Reciprocally, we could get the node name from a give Tor IP address => ip2node() { curl -s -d "QueryIP=$1" http://torstatus.blutmagie.de/tor_exit_query.php | grep -oP "Server name:.*'>\K\w+" ; } ip2node 204.8.156.142 BostonUCompSci Show Sample Output
This is sample output - yours may be different.
```
#: ip2node() { curl -s -d "QueryIP=$1" http://torstatus.blutmagie.de/tor_exit_query.php | grep -oP "Server name:.*'>\K\w+" ; }

#: ip2node 204.8.156.142

#: BostonUCompSci
```
0

curl -s -d "CSField=Name" -d "CSInput=BostonUCompSci" http://torstatus.blutmagie.de/index.php | grep -oP "ip=\K(\d+)(\.\d+){3}"

JisSey · 2012-03-09 16:52:27 3
list unique file extensions recursively for a path, include extension frequency stats

the find -printf "%f\n" prints just the file name from the given path. This means directory paths which contain extensions will not be considered. Show Sample Output
This is sample output - yours may be different.
```
.m3u
.M3U
.m4a
.m4v
.mp3
.Mp3
.MP3
```
0

find /some/path -type f -and -printf "%f\n" | egrep -io '\.[^.]*$' | sort | uniq -c | sort -rn

kyle0r · 2012-04-02 19:25:35 3
‹ First < 8 9 10 11 12 > Last ›

What's this?

commandlinefu.com is the place to record those command-line gems that you return to again and again. That way others can gain from your CLI wisdom and you from theirs too. All commands can be commented on, discussed and voted up or down.

Share Your Commands

Check These Out

back ssh from firewalled hosts

host B (you) redirects a modem port (62220) to his local ssh. host A is a remote machine (the ones that issues the ssh cmd). once connected port 5497 is in listening mode on host B. host B just do a ssh 127.0.0.1 -p 5497 -l user and reaches the remote host'ssh. This can be used also for vnc and so on.

Rename files in batch

Display a markdown file in a new tab in firefox

Add temporary entry to authorized_keys

If you frequently need to connect to your ubersecure mainframe from various uberunsafe machines, you have to face difficult decision: (a) type the password everytime during the session (lame), (b) add local public key to mainframes authorized_keys file (unsafe), (c) as above, but remove this key at the end of the session (pain in the a55). So let's say you save The Command to tempauth file in bin directory of your mainframe's account and make it executable. Then, while you're on one of these unsafe ones, do: $ cat $HOME/.ssh/id_rsa.pub|ssh 5z474n@mainframe.nl bin/tempauth 30 and password prompts stop the harassment for 30 minutes and you don't have to care to remove the unsafe key after that.

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"

Calculates the number of physical cores considering HyperThreading in AWK

Check whether hyperthreading is enabled or not. a better solution as nproc should work on all OS with awk

rgrep: recursive grep without .svn

Only excludes .svn from filenames.

Get decimal ascii code from character

printf treats first char after single ' as numeric equivalent

Search for a string in all files recursively

Apply permissions only to files

To apply only to dirs: $ chmod 755 $(find . -type d) Use -R parameters for recursive walk.

Stay in the loop…

Follow the Tweets.

Every new command is wrapped in a tweet and posted to Twitter. Following the stream is a great way of staying abreast of the latest commands. For the more discerning, there are Twitter accounts for commands that get a minimum of 3 and 10 votes - that way only the great commands get tweeted.

» http://twitter.com/commandlinefu
» http://twitter.com/commandlinefu3
» http://twitter.com/commandlinefu10

Subscribe to the feeds.

Use your favourite RSS aggregator to stay in touch with the latest commands. There are feeds mirroring the 3 Twitter streams as well as for virtually every other subset (users, tags, functions,…):

Subscribe to the feed for:

» all commands
» commands with 3 up-votes (commandlinefu3)
» commands with 10 up-votes (commandlinefu10)
» commands tagged grep

Commands tagged grep (409) the last day the last week the last month all time sorted by date votes

What's this?

Check These Out

Stay in the loop…

Commands tagged grep (409)

sorted by