Commands using grep | commandlinefu.com

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awk, bash, curl, find, grep, Linux, sed

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Functions

Terminal - Commands using grep - 1,662 results

echo "Decode this"| tr [a-zA-Z] $(echo {a..z} {A..Z}|grep -o .|sort -R|tr -d "\n ")

2009-09-18 06:38:28

User: dennisw

Functions: echo grep sort tr

Tags: random decode cipher

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Substitution cipher

This is just for fun.

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

Tags: IP grep regex ip address

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regex to match an ip

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

Comments (9) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate

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])'

2009-09-17 12:17:32

User: KeePon

Functions: echo grep

Tags: IP grep regex ip address

-2

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regex to match an ip

ls -lt|grep ^-|awk 'NR>5 { print $8 }'|xargs -r rm

2009-09-16 07:43:03

User: karel1980

Functions: awk grep ls xargs

Tags: ls

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Delete all but the latest 5 files, ignoring directories

Comments (0) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate

file /System/Library/Extensions/*.kext/Contents/MacOS/* |grep -i x86_64 |nl | tail -1 | cut -f1 -f3; file /System/Library/Extensions/*.kext/Contents/MacOS/* |grep -i "mach-o object i386" |nl | tail -1 | cut -f1 -f3

2009-09-11 16:43:27

User: digitalshadow

Functions: cut file grep nl tail

-2

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How far is Mac OS X 10.6 from 64-bit?

Not as far off as you thought, now is it?

-mac fanboy

echo "vertical text" | grep -o '.'

2009-09-11 03:45:04

User: dennisw

Functions: echo grep

Tags: column headers redirection paste process substitution

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Print text string vertically, one character per line.

Define a function

vert () { echo $1 | grep -o '.'; }

Use it to print some column headers

paste <(vert several) <(vert parallel) <(vert vertical) <(vert "lines of") <(vert "text can") <(vert "be used") <(vert "for labels") <(vert "for columns") <(vert "of numbers")

cat /var/lib/dpkg/info/*.list > /tmp/listin ; ls /proc/*/exe |xargs -l readlink | grep -xvFf /tmp/listin; rm /tmp/listin

2009-09-09 18:09:14

User: kamathln

Functions: cat grep ls readlink rm xargs

Tags: Debian find dpkg

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Find running binary executables that were not installed using dpkg

This helped me find a botnet that had made into my system. Of course, this is not a foolproof or guarantied way to find all of them or even most of them. But it helped me find it.

Comments (6) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate

echo -e "${PATH//://\n}" >/tmp/allpath; grep -Fh -f /tmp/allpath /var/lib/dpkg/info/*.list|grep -vxh -f /tmp/allpath >/tmp/installedinpath ; find ${PATH//:/ } |grep -Fxv -f /tmp/installedinpath

2009-09-09 05:33:14

User: kamathln

Functions: echo find grep

Tags: Debian dpkg PATH

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find files in $PATH that were not installed through dpkg

OS: Debian based (or those that use dpkg)

Equivalent to doing a dpkg -S on each file in $PATH, but way faster.

May report files generated though postinstall scripts and such. For example . It will report /usr/bin/vim .. which is not not a file installed directly by dpkg, but a link generated by alternatives hooks

Comments (1) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate

ssh [email protected]`for ((i=100; i<=110; i++));do arp -a 192.168.1.$i; done | grep 00:35:cf:56:b2:2g | awk '{print $2}' | sed -e 's/(//' -e 's/)//'`

2009-09-09 04:32:20

User: gean01

Functions: arp awk grep sed ssh

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connect via ssh using mac address

Connect to a machine running ssh using mac address by using the "arp" command

psg() { ps aux | grep "[${1[1]}]${1[2,-1]}"; }

2009-09-07 04:37:11

User: jedahan

Functions: grep ps

-5

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Find the process you are looking for minus the grepped one

alias ps?='psg' for maximum hawtness. Works in bash or zsh.

grep -oE "ssid=\".*\"" /etc/wpa_supplicant.conf | cut -c6- | sed s/\"//g | zenity --list --title="Choose Access Point" --column="SSID"

2009-09-05 10:41:05

User: unixmonkey5449

Functions: cut grep sed

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Makes a Zenity select list based on entries in your wpa_supplicant.conf

If you still connect to your wireless access point manually and need to use wpa_supplicant, the above fu will grep all of the known SSID from your wpa_supplicant.conf file, present it in a Zenity list and return the SSID name you choose. I've wrapped this command in to a bash script that then up's the interface, associates and autenticates. Saves me from using NetworkManager ;)

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ioreg -l -p IODeviceTree | grep -o EFI[0-9]. && system_profiler SPSoftwareDataType |grep 64

2009-09-03 19:58:44

User: commandlinefu

Functions: grep

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See if your mac can run 64-bit && if it the kernel is loaded 64-bit

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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

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Edit all files found having a specific string found by grep

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

Comments (4) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate

find . -exec grep foobar /dev/null {} \; | awk -F: '{print $1}' | xargs vi

2009-09-03 16:02:18

User: verboEse

Functions: awk find grep xargs

Tags: vim awk find grep

-1

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Edit all files found having a specific string found by grep

needs no GNU tools, as far as I see it

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grep -ir 'foo' * | awk -F '{print $1}' | xargs vim

2009-09-03 15:58:47

User: verboEse

Functions: awk grep xargs

Tags: vim sed awk grep

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Edit all files found having a specific string found by grep

saves one command. Needs GNU grep though :-(

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grep -Hrli 'foo' * | xargs vim

2009-09-03 15:44:05

User: dere22

Functions: grep xargs

Tags: vim sed awk grep

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Edit all files found having a specific string found by grep

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!!

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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

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Edit all files found having a specific string found by grep

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

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file /System/Library/Extensions/*.kext/Contents/MacOS/* |grep -i x86_64 |nl |tail -1 |cut -f1 -f3 && file /System/Library/Extensions/*.kext/Contents/MacOS/* |grep -v x86_64 |nl |tail -1 |cut -f1 -f3

2009-09-03 14:28:02

User: commandlinefu

Functions: cut file grep nl tail

-1

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How far is Mac OS X 10.6 from 64-bit?

Next time you see a mac fanboy bragging about 64-bitness of 10.6 give him this so he might sh?

echo sortmeplease | grep -o . | sort | tr -d '\n'; echo

2009-09-03 00:52:49

User: MrMerry

Functions: echo grep sort tr

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Sort a character string

Sorts a character string, using common shell commands.

nmap -R -sL 209.85.229.99/27 | awk '{if($3=="not")print"("$2") no PTR";else print$3" is "$2}' | grep '('

2009-09-02 16:33:15

User: netsaint

Functions: awk grep

Tags: nmap dns

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List of reverse DNS records for a subnet

This command uses nmap to perform reverse DNS lookups on a subnet. It produces a list of IP addresses with the corresponding PTR record for a given subnet. You can enter the subnet in CDIR notation (i.e. /24 for a Class C)). You could add "--dns-servers x.x.x.x" after the "-sL" if you need the lookups to be performed on a specific DNS server.

On some installations nmap needs sudo I believe. Also I hope awk is standard on most distros.

fdisk -l |grep -e '^/' |awk '{print $1}'|sed -e "s|/dev/||g"

2009-09-02 13:03:04

User: opexxx

Functions: awk fdisk grep sed

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list all hd partitions

free -b | grep "Swap:" | sed 's/ * / /g' | cut -d ' ' -f2

2009-09-02 07:16:34

User: opexxx

Functions: cut free grep sed

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free swap

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$php_dir/bin/php -i | grep configure

2009-09-02 06:44:12

User: Yousri

Functions: grep

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to see about php configure

see about php install configure

for dnsREC in $(curl -s http://www.iana.org/assignments/dns-parameters |grep -Eo ^[A-Z\.]+\ |sed 's/TYPE//'); do echo -n "$dnsREC " && dig +short $dnsREC IANA.ORG; done

2009-09-01 03:11:18

User: commandlinefu

Functions: dig echo grep sed

-1

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dig this

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grep -lir "sometext" * > sometext_found_in.log

2009-08-31 23:48:45

User: shaiss

Functions: grep

Tags: find text

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find files containing text

I find this format easier to read if your going through lots of files. This way you can open the file in any editor and easily review the file

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