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Commands using grep from sorted by
Terminal - Commands using grep - 1,595 results
grep -Eio '([[:alnum:]_.]+@[[:alnum:]_]+?\.[[:alpha:].]{2,6})' file.html
2009-06-16 20:19:47
User: wires
Functions: grep
3
Up
Down
extract email adresses from some file (or any other pattern)

find all email addresses in a file, printing each match. Addresses do not have to be alone on a line etc. For example you can grab them from HTML-formatted emails or CSV files, etc. Use a combination of

...|sort|uniq$

to filter them.

Show sample output | Comments (2) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate
perl -ne '$sum += $_ for grep { /\d+/ } split /[^\d\-\.]+/; print "$sum\n"'
2009-06-16 06:39:08
User: obscurite
Functions: grep perl split
Tags: perl sum summation add subtract arithmetic numbers
3
Up
Down
Do quick arithmetic on numbers from STDIN with any formatting using a perl one liner.

Good for summing the numbers embedded in text - a food journal entry for example with calories listed per food where you want the total calories. Use this to monitor and keep a total on anything that ouputs numbers.

Show sample output | Comments (1) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate
sed -e "s/\[{/\n/g" -e "s/}, {/\n/g" sessionstore.js | grep url | awk -F"," '{ print $1 }'| sed -e "s/url:\"\([^\"]*\)\"/\1/g" -e "/^about:blank/d" > session_urls.txt
2009-06-14 15:08:31
User: birnam
Functions: awk grep sed
2
Up
Down
extract all urls from firefox sessionstore

This will extract all of the urls from a firefox session (including urls in a tab's history). The sessionstore.js file is in ~/.mozilla/firefox/{firefox profile}

Comments (2) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate
egrep -r '(render_message|multipart).*('`find app/views -name '*.erb' | grep mailer | sed -e 's/\..*//' -e 's/.*\///' | uniq | xargs | sed 's/ /|/g'`')' app/models
2009-06-12 18:53:29
User: foobarfighter
Functions: egrep grep sed uniq xargs
0
Up
Down
Finds all of the mailers being used in your rails app
Comments (1) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate
ldapsearch -H ldap://localhost:389 -D cn=username,ou=users,dc=domain -x -W -b ou=groups,dc=domain '(member=cn=username,ou=users,dc=domain)' | grep ^dn | sed "s/dn\: cn=\([^,]*\),ou=\([^,]*\),.*/\2 \1/"
2009-06-11 14:50:11
User: nitehawk
Functions: grep sed
-2
Up
Down
search for groups in ldap

This expression looks for groups inside of a GroupOfNames class element, that is itself inside one (or many) Organizational Unit (ou) nodes in the ldap tree. Give you a quick dump of all the groups the user belongs to. Handy for displaying on a webpage.

Show sample output | Comments (0) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate
if [ -z $(echo $var | grep [0-9]) ]; then echo "NON NUMERIC"; fi
2009-06-04 07:41:26
User: AnusJenkins
Functions: echo grep
2
Up
Down
Non Numeric Check

use to execute a block of code only if $var is numeric

Comments (3) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate
find . -name "*jpg" -exec jpeginfo -c {} \; | grep -E "WARNING|ERROR"
2009-06-03 22:08:48
User: vincentp
Functions: find grep
Tags: Image processing image photo jpeg corrupt
11
Up
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Find corrupted jpeg image files

Finds all corrupted jpeg files in current directory and its subdirectories. Displays the error or warning found.

The jpeginfo is part of the jpeginfo package in debian.

Should you wish to only get corrupted filenames, use cut to extract them :

find ./ -name *jpg -exec jpeginfo -c {} \; | grep -E "WARNING|ERROR" | cut -d " " -f 1
Show sample output | Comments (2) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate
URL=http://svn.example.org/project; diff -u <(TZ=UTC svn -q log -r1:HEAD $URL | grep \|) <(TZ=UTC svn log -q $URL | grep \| | sort -k3 -t \|)
2009-06-03 14:26:55
User: sunny256
Functions: diff grep sort
Tags: bash svn
2
Up
Down
Find chronological errors or bad timestamps in a Subversion repository

Lists revisions in a Subversion repository with a timestamp that doesn't follow the revision numbering order. If everything is OK, nothing is displayed.

Comments (0) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate
find /var/log -type f -exec file {} \; | grep 'text' | cut -d' ' -f1 | sed -e's/:$//g' | grep -v '[0-9]$' | xargs tail -f
2009-06-03 09:47:08
User: mohan43u
Functions: cut file find grep sed tail xargs
Tags: tail
6
Up
Down
Monitor logs in Linux using Tail

Works in Ubuntu, I hope it will work on all Linux machines. For Unixes, tail should be capable of handling more than one file with '-f' option.

This command line simply take log files which are text files, and not ending with a number, and it will continuously monitor those files.

Putting one alias in .profile will be more useful.

Comments (7) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate
while [ i != 0 ]; do sleep 1 | dialog --clear --gauge "Quality: " 0 0 $(cat /proc/net/wireless | grep $WIRELESSINTERFACE | awk '{print $3}' | tr -d "."); done
2009-05-31 16:09:23
User: ncaio
Functions: awk cat grep sleep tr
1
Up
Down
Check wireless link quality with dialog box

The variable WIRELESSINTERFACE indicates your wireless interface

Comments (9) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate
ioreg -lw0 | grep IODisplayEDID | sed "/[^<]*</s///" | xxd -p -r | strings -6
2009-05-29 18:52:12
User: unixmonkey4003
Functions: grep sed strings
Tags: macosx hardware display
-1
Up
Down
Show display type
Comments (0) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate
git grep -l "your grep string" | xargs gedit
2009-05-28 10:12:19
User: sfusion
Functions: grep xargs
3
Up
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grep across a git repo and open matching files in gedit
Comments (0) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate
grep -PL "\t" -r . | grep -v ".svn" | xargs sed -i 's/\t/ /g'
2009-05-28 08:52:14
User: root
Functions: grep sed xargs
Tags: Text Processing
3
Up
Down
Replace all tabs with spaces in an application

Note that this assumes the application is an SVN checkout and so we have to throw away all the .svn files before making the substitution.

Comments (1) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate
svn log fileName|cut -d" " -f 1|grep -e "^r[0-9]\{1,\}$"|awk {'sub(/^r/,"",$1);print "svn cat fileName@"$1" > /tmp/fileName.r"$1'}|sh
2009-05-27 02:11:58
User: fizz
Functions: awk cut grep
Tags: bash svn awk grep
2
Up
Down
fetch all revisions of a specific file in an SVN repository

exported files will get a .r23 extension (where 23 is the revision number)

Comments (4) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate
lsof -nP +p 24073 | grep -i listen | awk '{print $1,$2,$7,$8,$9}'
2009-05-26 20:47:14
User: icreed
Functions: awk grep
Tags: Linux lsof
3
Up
Down
find listening ports by pid

change 24073 to your pid

Show sample output | Comments (1) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate
kill_daemon() { echo "Daemon?"; read dm; kill -15 $(netstat -atulpe | grep $dm | cut -d '/' -f1 | awk '{print $9}') }; alias kd='kill_daemon
2009-05-26 20:39:56
User: P17
Functions: alias awk cut echo grep kill netstat read
Tags: alias kill netstat
-5
Up
Down
Kill a daemon by name, not by PID

Just find out the daemon with $ netstat -atulpe. Then type in his name and he gets the SIGTERM.

Comments (3) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate
cpp /usr/include/stdio.h | grep -v '^#' | grep -v '^$' | less
2009-05-22 22:40:25
User: mohan43u
Functions: cpp grep
Tags: C Programming headers GNU Preprocessor
4
Up
Down
display typedefs, structs, unions and functions provided by a header file

will display typedefs, structs, unions and functions declared in 'stdio.h'(checkout _IO_FILE structure). It will be helpful if we want to know what a particular header file will offer to us. Command 'cpp' is GNU's C Preprocessor.

Comments (2) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate
F="$HOME/.moz*/fire*/*/session*.js" ; grep -Go 'entries:\[[^]]*' $F | cut -d[ -f2 | while read A ; do echo $A | sed s/url:/\n/g | tail -1 | cut -d\" -f2; done
2009-05-21 21:58:42
User: b2e
Functions: cut echo grep read sed tail
3
Up
Down
List last opened tabs in firefox browser

Tuned for short command line - you can set the path to sessionstore.js more reliable instead of use asterixes etc.

Usable when you are not at home and really need to get your actual opened tabs on your home computer (via SSH). I am using it from my work if I forgot to bookmark some new interesting webpage, which I have visited at home. Also other way to list tabs when your firefox has crashed (restoring of tabs doesn't work always).

This script includes also tabs which has been closed short time before.

Comments (0) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate
expr $(fdisk -s ` grep ' / ' /etc/mtab |cut -d " " -f1`) / 1024
2009-05-21 17:25:38
User: ncaio
Functions: cut expr fdisk grep
-1
Up
Down
Alternative way to get the root directory size in megabytes
Comments (2) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate
curl -s checkip.dyndns.org | grep -Eo '[0-9\.]+'
2009-05-21 16:12:21
User: haivu
Functions: grep
Tags: Network IP grep curl
4
Up
Down
What is My WAN IP?

The curl command retrieve the HTML text containing the IP address. The grep command picks out the IP address from that HTML text.

Show sample output | Comments (2) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate
grep --color=always | less -R
2009-05-20 20:30:19
User: dinomite
Functions: grep less
Tags: color grep GNU/Linux
31
Up
Down
Colorized grep in less

Get your colorized grep output in less(1). This involves two things: forcing grep to output colors even though it's not going to a terminal and telling less to handle those properly.

Comments (0) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate
netstat -ntlp | grep -w 80 | awk '{print $7}' | cut -d/ -f1
2009-05-20 20:29:56
User: ncaio
Functions: awk cut grep netstat
2
Up
Down
get a process list by listen port
Comments (4) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate
find / -iname '*.pdf' -print -exec pdftotext '{}' - \; | grep --color -i "unix"
2009-05-20 20:23:34
User: ncaio
Functions: find grep
2
Up
Down
find string into one pdf file
Comments (0) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate
grep -lir "some text" *
2009-05-20 19:44:35
User: decept
Functions: grep
Tags: find text
22
Up
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find files containing text

-l outputs only the file names

-i ignores the case

-r descends into subdirectories

Comments (2) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate
find . -name "*.jar" | while read file; do echo "Processing ${file}"; jar -tvf $file | grep "Foo.class"; done
2009-05-20 17:33:17
User: sharfah
Functions: echo find grep read
Tags: java
3
Up
Down
Find which jars contain a class
Comments (1) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate