Commands using egrep sorted by votes

Commands using egrep (220)

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tail, with specific pattern colored

but you can't see the colors in that sample output :( Show Sample Output
This is sample output - yours may be different.
```
seq 1111 1122|egrep --color=always $\|12
1111
1112
1113
1114
1115
1116
1117
1118
1119
1120
1121
1122
```
-2

tail -f file | egrep --color=always $\|PATTERN

sitaram · 2009-10-15 13:08:30 15
Find all dot files and directories

trying to copy all your dotfiles from one location to another, this may help Show Sample Output
This is sample output - yours may be different.
```
.bash_profile
.bashrc
.ssh
```
-2

ls -a | egrep "^\.\w"

kulor · 2009-11-11 18:19:56 12
search for a pattern (regex) in all text files (ignoring binary files) in a directory tree
This is sample output - yours may be different.
-2

egrep -i "somepattern" `find . -type f -print`

dudleyperkins · 2009-12-02 16:00:46 5
Find errors in your php website
This is sample output - yours may be different.
-2

egrep '(\[error\])+.*(PHP)+' /var/log/apache2/error.log

cicatriz · 2010-07-26 12:42:09 3
Get all links of a website
This is sample output - yours may be different.
-2

lynx -dump http://domaim.com | egrep -o -e 'http://[/0-9a-z.]+html'

yababay · 2010-09-04 17:49:12 3
Get My Public IP Address

Just an alternative :)
This is sample output - yours may be different.
-2

links2 -dump http://checkip.dyndns.com| egrep -m1 -o '[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}'

lokutus25 · 2010-10-08 10:53:33 5
Get DELL Warranty Information from support.dell.com

The dates in the output are Start Date, End Date, Days Remaining in warranty, respectively. This will only work if you are running it on a dell machine. You can substitute the dmidecode command with a service tag if you are not using a dell. Also, you have to either allow your user to run sudo dmidecode with no password or run this command as root. Show Sample Output
This is sample output - yours may be different.
```
Product Support for Latitude D820

Your Warranty
Next Business Day Support 4/16/2008 4/16/2010 0
```
-2

curl -Ls "http://support.dell.com/support/DPP/Index.aspx?c=us&cs=08W&l=en&s=biz&ServiceTag=$(dmidecode -s system-serial-number)"|egrep -i '>Your Warranty<|>Product Support for'|html2text -style pretty|egrep -v 'Request|View'|perl -pane 's/^(\s+|\})//g;'

din7 · 2011-02-18 22:29:05 3
Find out local DISPLAY number

Not always does Xorg run on :0. For times like those, this script allows you to find out which it is.
This is sample output - yours may be different.
-2

export DISPLAY=$(tr '\000' '\n' < /proc/`pidof Xorg`/cmdline | egrep '^:[0-9]+')

oernii2 · 2012-12-18 07:26:16 6
Get the /dev/disk/by-id fragment for a physical drive

This was tested on Ubuntu 12.04 (Precise) LTS Server. It returns the name of the symlink within /dev/disk/by-id for the physical drive you specify. Change /dev/sda to the one you want, and replace ata- with scsi- or the appropriate type for your drive. I used this to pre-configure grub-pc during a non-interactive install because I had to tell it which disk to install grub on, and physical disks don't have a UUID such as that blkid provides.
This is sample output - yours may be different.
-2

ls -l /dev/disk/by-id | egrep ata-.*`hdparm -i /dev/sda | grep SerialNo | sed 's/.*SerialNo=//' | tr -d "\n"`.*sda$ | sed -e 's/.*ata-/ata-/' -e 's|[ ].*||' | tr -d "\n"

wizonesolutions · 2013-01-07 10:20:25 6

UBNT device

-2

iwlist ath0 scanning |egrep '(ESSID|Signal|Address)'| \sed -e 's/Cell - Address:*//g' -e 's/ESSID://g' \-e 's/Noise level=-//g' -e 's/dBm//g' \-e 's/Quality=*//g' -e 's/Signal level=-//g' \-e 's/"//g'

ene2002 · 2013-05-04 08:48:45 19

Find files and list them with a readable informative output
This is sample output - yours may be different.
-3

find . -type f | sed 's,.*,stat "&" | egrep "File|Modify" | tr "\\n" " " ; echo ,' | sh | sed 's,[^/]*/$.*$. Modify: $....-..-.. ..:..:..$.*,\2 \1,' | sort

pepin · 2010-05-27 22:30:18 3
Show the number of current httpd processes
This is sample output - yours may be different.
-3

netstat -l -p --tcp | egrep -e 'www.*[0-9]{3,4}\/(apache2|httpd)' | awk '{print$7}'

cicatriz · 2010-07-26 12:52:07 5
LIST FILENAMES OF FILES CREATED TODAY IN CURRENT DIRECTORY
This is sample output - yours may be different.
-3

ls -la | grep $(date +%Y-%m-%d) | egrep -v -e '\.{1,2}' | sed "s/.*\:[0-9]\{2\} $.\+$$/\\1/g"

cicatriz · 2010-07-29 14:37:51 3
Regex or

to find occurances of expr1 OR expr2
This is sample output - yours may be different.
-3

egrep '(expr1|expr2)' file

evandrix · 2011-07-14 14:22:11 40
Search all files of type *.php for string 'specialFunction' and output the result in searchResult.txt

Will search recursively and output the searchResult.txt in the same folder you are located.
This is sample output - yours may be different.
-4

find . -name "*.php" | xargs egrep -i -s 'specialFunction' > searchresult.txt

tb323 · 2009-02-23 15:25:49 12
kill all running instances of wine and programs runned by it (exe)

This command kills all wine instances and each EXE application working on a PC. Here is command info: 1) ps ax > processes = save process list to file named "processes" (we save it because we don't wont egrep to be found in the future) 2) cat processes | egrep "*.exe |*exe]" = shows the file "processes" and after greps for each *.exe and *exe] in it 3) | awk '{ print $1 }' > pstokill = saves processes PID's to file "pstokill" using awk filter 4) kill $(cat pstokill) = kills each PID in file pstokill, which is shown by cat program 5) rm processes && rm pstokill = removes temporary files Show Sample Output
This is sample output - yours may be different.
```
(silence if ok; kill usage if there are no EXE/wine programs running)
```
-4

ps ax > processes && cat processes | egrep "*.exe |*exe]" | awk '{ print $1 }' > pstokill && kill $(cat pstokill) && rm processes && rm pstokill

sxiii · 2011-02-26 16:13:58 6
grep: find in files

grep - Search file for character string Search for one or more strings in one or more files. Examples:- grep that myfile.txt Look for the string ``that'' in the file called ``myfile.txt'' and print out each line that matches. egrep -in "this|that" *.dat Extended grep search *.dat files for ``this'' or ``that'' case insensitive (-i) and where found print line number (-n) along with the line contents. Show Sample Output
This is sample output - yours may be different.
```
[root@centos64 Desktop]# egrep -in "127.0.0.1" /etc/hosts
4:127.0.0.1   centos64
5:127.0.0.1   localhost
```
-5

egrep -in "this|that" *.dat

evandrix · 2011-07-06 09:42:26 27
alias to list hidden files of a folder
This is sample output - yours may be different.
-6

alias lh='ls -a | egrep "^\."'

fabs · 2009-03-05 20:36:58 11
send Everyone on your machine some love

This works just like write or wall ... cept one thing the sender is anonymous ... if you really want to drive everyone insane replace echo \"The Matrix has you...\" with cat /dev/urandom nice one to do on April fool's day Show Sample Output
This is sample output - yours may be different.
```
The Matrix has you... (on all writable ttys)
```
-12

w | egrep -v '(load|FROM)' | awk '{print $2}' | sed 's/^/tty/' | awk '{print "echo \"The Matrix has you...\" >> /dev/" $1}' | bash

copremesis · 2009-04-29 22:04:56 10
Remove "ssh host" from known hosts file.

I have this as a file called deletekey in my ~/bin. Makes life a little easier.
This is sample output - yours may be different.
-13

echo "${1}" | egrep '^[[:digit:]]*$' ; if [ "$?" -eq 0 ] ; then sed -i "${1}"d $HOME/.ssh/known_hosts ; else printf "\tYou must enter a number!\n\n" ; exit 1 ; fi

DaveQB · 2010-07-11 23:09:11 3
‹ First < 7 8 9

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Add Password Protection to a file your editing in vim.

While I love gpg and truecrypt there's some times when you just want to edit a file and not worry about keys or having to deal needing extra software on hand. Thus, you can use vim's encrypted file format. For more info on vim's encrypted files visit: http://www.vim.org/htmldoc/editing.html#encryption

Netstat Connection Check

This command does a tally of concurrent active connections from single IPs and prints out those IPs that have the most active concurrent connections. VERY useful in determining the source of a DoS or DDoS attack.

create ICO file with more than one image

requires imagemagick. -background transparent is of course optional.

history autocompletion with arrow keys

This will enable the possibility to navigate in the history of the command you type with the arrow keys, example "na" and the arrow will give all command starting by na in the history.You can add these lines to your .bashrc (without &&) to use that in your default terminal.

Show apps that use internet connection at the moment. (Multi-Language)

Find brute force attempts on SSHd

Searches the /var/log/secure log file for Failed and/or invalid user log in attempts.

Color STDERR in output

This command will take the output of a command and color any STDERR output as a different color (red outline in this case)

Batch rename extension of all files in a folder, in the example from .txt to .md

Lists all listening ports together with the PID of the associated process

This command is more portable than it's cousin netstat. It works well on all the BSDs, GNU/Linux, AIX and Mac OS X. You won't find lsof by default on Solaris or HPUX by default, but packages exist around the web for installation, if needed, and the command works as shown. This is the most portable command I can find that lists listening ports and their associated pid.

Create a mirror of a local folder, on a remote server

Create a exact mirror of the local folder "/root/files", on remote server 'remote_server' using SSH command (listening on port 22) (all files & folders on destination server/folder will be deleted)

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Commands using egrep (220)

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