Commands using egrep sorted by votes

Commands using egrep (220)

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Remove lines matching a pattern in files (backup any modified files)
This is sample output - yours may be different.
0

pattern='regexp_pattern'; find . -type f -perm +220 ! -name '*.bak' -print0 | xargs -0 egrep -lZ $pattern | xargs -0 sed -i.bak -e "/$pattern/d"

yblusseau · 2010-03-11 13:10:15 2
Dump an rpm's package details (besides the files)

If you want to relocate a package on your own, or you just want to know what those PREIN/UN and POSTIN/UN scripts will do, this will dump out all that detail simply. You may want to expand the egrep out other verbose flags like CHANGELOGTEXT etc, as your needs require. It isn't clear, but the formatting around $tag is important: %{$tag} just prints out the first line, while [%{$tag }] iterates thru multi-line output, joining the lines with a space (yes, there's a space between the g and } characters. To break it out for all newlines, use [%{$tag\n}] but the output will be long. This is aside from rpm2cpio | cpio -ivd to extract the package files.
This is sample output - yours may be different.
0

rpm --querytags | egrep -v HEADERIMMUTABLE | sort | while read tag ; do rpm -q --queryformat "$tag: [%{$tag} ]\n" -p $SomeRPMfile ; done

DoNotRememberMe · 2010-03-25 05:40:48 3
Get Unique Hostnames from Apache Config Files

Get a list of all the unique hostnames from the apache configuration files. Handy to see what sites are running on a server.
This is sample output - yours may be different.
0

cat /etc/apache2/sites-enabled/* | egrep 'ServerAlias|ServerName' | tr -s " " | sed 's/^[ ]//g' | uniq | cut -d ' ' -f 2 | sed 's/www.//g' | sort | uniq

chronosMark · 2010-04-08 08:51:17 5
Get a count of how many file types a project has

I created this command to give me a quick overview of how many file types a directory, and all its subdirectories, contains. It works based off file extension, rather than file(1)'s magic output, because it ended up being more accurate and less confusing. Files that don't have an ext (README) are generally not important for me to want to count, but you're free to customize this fit your needs. Show Sample Output
This is sample output - yours may be different.
```
    FILE TYPE        TOTAL
         .ico        1
         .jpg        17
         .log        1
         .php        104
         .png        44
```
0

printf "\n%25s%10sTOTAL\n" 'FILE TYPE' ' '; for ext in $(find . -iname \*.* | egrep -o '\.[^[:space:].]+$' | egrep -v '\.svn*' | sort -f | uniq -i); do count=$(find . -iname \*$ext | wc -l); printf "%25s%10s%d\n" $ext ' ' $count; done

rkulla · 2010-04-16 21:12:11 3
If you have lots of svn working copies in one dir and want to see in which repositories they are stored, this will do the trick.

If you have lots of subversion working copies in one directory and want to see in which repositories they are stored, this will do the trick. Can be convenient if you need to move to a new subversion server. Show Sample Output
This is sample output - yours may be different.
```
./www.example.com/
URL: https://svn.example.com/example/trunk
./www2.example.com/
URL: https://svn.example.com/example2/trunk
```
0

(for i in `find . -maxdepth 2 -name .svn | sed 's/.svn$//'`; do echo $i; svn info $i; done ) | egrep '^.\/|^URL'

jespere · 2010-05-09 11:54:37 3

Fewer keystrokes to search man page of command

Quicker way to search man pages of command for key word Show Sample Output

function mg(){ man ${1} | egrep ${2} | more; }

quincymd · 2010-07-01 21:14:24 7

simple regex spell checker

searches through the linux dictionary for the word you're trying to spell (you can use regular expressions, e.g. "< /usr/share/dict/words egrep bro[c]+o[l]+i" ) Show Sample Output
This is sample output - yours may be different.
```
onomatopoeia
onomatopoeial
onomatopoeian
```
0

< /usr/share/dict/words egrep onomatopoeia

smop · 2010-08-13 00:12:39 4
grep on IP range from maillog

Useful for grepping an IP range from the maillog. When for instance dealing with a spam-run from a specific IP range, or when errors occur from or to a specific IP-range. In the example above the IP range 183.0.0.0/10 (183.0.0.0 - 183.63.255.255) To grep the IP range 124.217.224.0/19 (124.217.224.0 - 124.217.255.255) from the maillog: egrep '124\.217\.2(2[4-9]|[34][0-9]|5[0-5])' -J /var/log/maillog* NOTE: the location of the maillog may vary based upon operating system and distribution.
This is sample output - yours may be different.
0

egrep '183\.([0-9]|(1[0-6]|2[0-3]))' -J /var/log/maillog*

wazigster · 2010-10-17 21:44:57 3
find co-ordinates of a location

Just a few minor changes. First the usage of lynx instead of curl so no sed is needed to revert the spaces. Then the usages of egrep instead of grep -e to save a few characters and last the removal of the extra 0. Show Sample Output
This is sample output - yours may be different.
```
$ : distance 1600 Pennsylvania Avenue, Washington D.C
Full Address: 1600 Pennsylvania Ave NW, Washington D.C., DC 20500, USA,
coordinates: [ -77.0365191, 38.8976964 ]
```
0

findlocation() {place=`echo $@`; lynx -dump "http://maps.google.com/maps/geo?output=json&oe=utf-8&q=$place" | egrep "address|coordinates" | sed -e 's/^ *//' -e 's/"//g' -e 's/address/Full Address/';}

houghi · 2010-10-18 21:59:26 3
Get all links of a website
This is sample output - yours may be different.
0

lynx -dump http://www.domain.com | awk '/http/{print $2}' | egrep "^https{0,1}"

xutale · 2010-11-10 11:05:52 2
Find which service was used by which port number

Apply to almost linux distroes. Show Sample Output
This is sample output - yours may be different.
```
xuta@xuta-itim:~$ cat /etc/services  | egrep [[:blank:]]25/
smtp		25/tcp		mail
```
0

cat /etc/services | egrep [[:blank:]]<port_number>/

xutale · 2010-11-25 08:04:31 6

Take a screenshot of the screen, upload it to ompldr.org and put link to the clipboard and to the screenshots.log (with a date stamp) in a home directory.

scrot, curl, egrep, sed, xsel, libnotify-bin must be installed. P.S. Sorry for so long command Show Sample Output

scrot $1 /tmp/screenshot.png && curl -s -F file1=@/tmp/screenshot.png -F submit="OMPLOAD\!" http://ompldr.org/upload | egrep '(View file: <a href="v([A-Za-z0-9+\/]+)">)' | sed 's/^.*$http:\/\/.*$<.*$/\1/' | xsel -b -i ? (full in a sample output)

artleg · 2011-01-15 11:33:43 4

Display any udp/tcp connections by process name or by process id

Where COMMAND is the process(es) name. I prefer to get all states but you may add ESTABLISHED in the grep regex. lsof -c apache2 | egrep -o 'TCP.*ESTABLISHED.*$' -nP flags are optional and UDP is irrelevant for established connections Similar but using the process id: lsof -nP -p PID | egrep -o '(TCP|UDP).*$' Show Sample Output
This is sample output - yours may be different.
```
$ lsof -nP -c apache2 | egrep -o 'TCP.*$' | sort -u
TCP 192.168.0.2:443->192.168.0.136:3373 (ESTABLISHED)
TCP 192.168.0.2:443->192.168.0.137:11127 (ESTABLISHED)
TCP 192.168.0.2:443->192.168.0.137:11153 (ESTABLISHED)
TCP *:443 (LISTEN)
TCP *:80 (LISTEN)

$ lsof -p 17279|egrep -o '(TCP|UDP).*$'
TCP 127.0.0.1:32434 (LISTEN)
UDP *:32435 
```
0

lsof -nP -c COMMAND | egrep -o '(TCP|UDP).*$' | sort -u

forcefsck · 2011-01-25 12:04:13 4
Quick enter into a single screen session
This is sample output - yours may be different.
0

alias screenr='screen -r $(screen -ls | egrep -o -e '[0-9]+' | head -n 1)'

yababay · 2011-05-12 05:44:39 5
Find the package a command belongs to on debian-based distros

Similar to command 7822, but handles errors gracefully. Show Sample Output
This is sample output - yours may be different.
```
$ whichpkg cron
cron: /usr/sbin/cron

$ whichpkg ls
coreutils: /bin/ls

$ whichpkg intentionally-non-existent
dpkg: *intentionally-non-existent* not found.
```
0

function whichpkg { dpkg -S $1 | egrep -w $(which $1)$; }

b_t · 2011-07-05 22:56:48 3

A command's package details

This version builds on my command 8776 (Find the package a command belongs to on debian-based distros). So if you use that command to find package name then you could alternatively use following for package summary: function summpkg { dpkg -s $(whichpkg $1 | awk -F: '{print $1}'); } Show Sample Output

function summpkg { dpkg -s $(dpkg -S $1 | egrep -w $(which $1)$ | awk -F: '{print $1}') ; }

b_t · 2011-07-05 23:06:37 3

Regex or
This is sample output - yours may be different.
0

egrep expr1\|expr2 file

p01nt · 2011-07-14 14:51:17 4
Set executable permissions only to executable files

If you make a mess (like I did) and you removed all the executable permissions of a directory (or you set executable permissions to everything) this can help. It supports spaces and other special characters in the file paths, but it will work only in bash, GNU find and GNU egrep. You can complement it with these two commands: 1. add executable permission to directories: find . type d -print0 | xargs -0 chmod +x 2. and remove to files: find . type d -print0 | xargs -0 chmod -x Or, in the same loop: while IFS= read -r -u3 -d $'\0' file; do case $(file "$file" | cut -f 2- -d :) in :*executable*|*ELF*|*directory*) chmod +x "$file" ;; *) chmod -x "$file" ;; esac || break done 3< <(find . -print0) Ideas stolen from Greg's wiki: http://mywiki.wooledge.org/BashFAQ/020
This is sample output - yours may be different.
0

while IFS= read -r -u3 -d $'\0' file; do file "$file" | egrep -q 'executable|ELF' && chmod +x "$file"; done 3< <(find . -type f -print0)

keymon · 2011-08-18 15:37:23 13
Scrape all RBLs off the anti-abuse.org site
This is sample output - yours may be different.
0

lynx -dump http://www.anti-abuse.org/multi-rbl-check/ | grep ']' | awk -F\] '{ print $2 }' | sed '/^\[/d' | egrep -v ^[A-Z]

audiopathix · 2011-09-30 03:52:29 5
Query well known ports list

Just use your system preinstalled file Show Sample Output
This is sample output - yours may be different.
```
[root#server][~]> portnum 25
smtp            25/tcp          mail
smtp            25/udp          mail
```
0

portnum() { egrep "[[:space:]]$*/" /etc/services; }

unixmonkey26187 · 2011-10-07 16:38:29 3
Provides external IP, Country and City in a formated manner.

Provides a cleaner output plus some more details about the IP address. Also, a flaw was corrected where the URL provided the results in Spanish by default. Show Sample Output
This is sample output - yours may be different.
```
[09:46 PM] root@MyServer:~ $  geoip 218.53.106.44
   
|   Host Name: 218.53.106.44                                                 |
|  IP Address: 218.53.106.44                                                 |
|     Country: Korea,_Republic_Of [korea, republic of]                       |
|        City: Seocho                                                        |
|   Longitude: 127.0167                                                      |
|____Latitude:_37.4833_______________________________________________________|
```
0

function geoip() { curl -s "http://www.geoiptool.com/en/?IP=$1" | html2text | egrep --color "IP Address:|Country:|City:|Longitude:|Latitude:|Host Name:" }

JohnQUnknown · 2011-10-25 04:49:25 3
Calculating number of Connection to MySQL
This is sample output - yours may be different.
0

mysql -u root -p -N -e"show processlist\G;" | egrep "Host\:" | awk -F: '{ print $2 }' | sort | uniq -c

zuck · 2011-12-22 09:04:07 4
kill all running instances of wine and programs runned by it (exe)

The other 2 commands that are listed will also kill the egrep process and any libexec processes because the .exe isn't escaped so it is really using . meaning anything containing exe. The command i posted escapes the (dot) in .exe and then filters the actual egrep process so that it doesn't get killed before the other processes being killed. Also added the -9 switch for kill to send sigterm to the processes, in case people are wondering why processes aren't getting killed after running just kill . This should work better for people :)
This is sample output - yours may be different.
0

wineserver -k; killall -9 wine wineserver; for i in `ps ax|egrep "*\.exe"|grep -v 'egrep'|awk '{print $1 }'`;do kill -9 $i;done

godmachine81 · 2011-12-30 01:38:15 4
List users in a group

I can't find the lid command on my system, there is also another complied program: http://xyne.archlinux.ca/projects/lsgrp/
This is sample output - yours may be different.
0

lsgrp() { read GID USERS <<< "$(grep "^$1:" /etc/group | cut -d: -f3,4 | tr ':,' ' ')" ; echo -e "${USERS// /\n}" | egrep -v "^($1)?$" ; egrep :[0-9]+:$GID: /etc/passwd | cut -d: -f1 ; }

livibetter · 2012-03-16 09:57:33 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
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Recall last argument of previous command

!$ recalls the last argument of the previous command. This is very useful when you have to operate several operations on the same file for example.

diff current vi buffer edits against original file

mailx to send mails from console

It is the best way i found to send a mail from the console in my centos server.

Collect a lot of icons from /usr/share/icons (may overwrite some, and complain a bit)

In other way of xargs, only with find -exec

a function to put environment variable in zsh history for editing

This only makes sense if you are using command line editing. Create the function in your current zsh session, then type eve PATH go 'UP' in your history and notice the current (editable) definition of PATH shows up as the previous command. Same as doing: PATH="'$PATH'" but takes fewer characters and you don't have to remember the escaping.

for newbies, how to get one line info about all /bin programs

Get simple description on each file from /bin dir, in list form, usefull for newbies.

Attempt an XSS exploit on commandlinefu.com

Mouse around the title of this item, and note that your cookies are being logged to the console. If I were evil, I could instead send everyone's cookies to my site, and then post up-votes on all my submissions using their cookies, and try to delete every other submission, until clfu was completely pwned by me, redirecting people to malware and porn sites, and so on. Update - now fixed.

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"

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"

Server load and process monitoring

In certain cases you mighy need to monitor the server load caused by certain process. For example HTTP, while stress testing apache using ab (apache benchmark) you may want to monitor the server status,load, # of spawned HTTP processes, # of established connections, # of connections in close wait state, apache memory footprint etc.

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Commands using egrep (220)

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