
	LinuxCMD.org is the Official Reference about Linux Command Line documentation

Credits | ToDO (Help US) | ChangeLog | Terms of Use and License | About project

English - English

Linux Command Line

nothing it's impossible by command line!

Social Bookmarking

Commands by Argument

View the commands list divided into arguments

Show all commands

View all commands list on single sheet

A-Z Command Index

View the commands by letter

Tools

Add-ons of LinuxCMD - some useful tools for you

NewsLetter

Languages Map

Add Language!

Linux Command Line version 1.4
Last modified date: 2008-11-15
Created Date: 2008-01-06

Home

Users Area

Tools

Text Manipulation

View the commands list divided into arguments

Translated by: Team LinuxCMD.org |
become translator!

Command

Description

cat example.txt | awk 'NR%2==1'

remove all even lines from example.txt

echo a b c | awk '{print $1}'

view the first column of a line

echo a b c | awk '{print $1,$3}'

view the first and third column of a line

cat -n file1

number row of a file

comm -1 file1 file2

compare contents of two files by deleting only unique lines from 'file1'

comm -2 file1 file2

compare contents of two files by deleting only unique lines from 'file2'

comm -3 file1 file2

compare contents of two files by deleting only the lines that appear on both files

diff file1 file2

find differences between two files

grep Aug /var/log/messages

look up words "Aug" on file '/var/log/messages'

grep ^Aug /var/log/messages

look up words that begin with "Aug" on file '/var/log/messages'

grep [0-9] /var/log/messages

select from file '/var/log/messages' all lines that contain numbers

grep Aug -R /var/log/*

search string "Aug" at directory '/var/log' and below

paste file1 file2

merging contents of two files for columns

paste -d '+' file1 file2

merging contents of two files for columns with '+' delimiter on the center

sdiff file1 file2

find differences between two files and merge interactively alike "diff"

sed 's/string1/string2/g' example.txt

replace "string1" with "string2" in example.txt

sed '/^$/d' example.txt

remove all blank lines from example.txt

sed '/ *#/d; /^$/d' example.txt

remove comments and blank lines from example.txt

sed -e '1d' exampe.txt

eliminates the first line from file example.txt

sed -n '/string1/p'

view only lines that contain the word "string1"

sed -e 's/ *$//' example.txt

remove empty characters at the end of each row

sed -e 's/string1//g' example.txt

remove only the word "string1" from text and leave intact all

sed -n '1,5p' example.txt

print from 1th to 5th row of example.txt

sed -n '5p;5q' example.txt

print row number 5 of example.txt

sed -e 's/00*/0/g' example.txt

replace more zeros with a single zero

sort file1 file2

sort contents of two files

sort file1 file2 | uniq

sort contents of two files omitting lines repeated

sort file1 file2 | uniq -u

sort contents of two files by viewing only unique line

sort file1 file2 | uniq -d

sort contents of two files by viewing only duplicate line

echo 'word' | tr '[:lower:]' '[:upper:]'

convert from lower case in upper case

Commands by Argument

System information - Shutdown, Restart and Logout of a system - Files and Directory - File search - Mounting a Filesystem - Disk Space - Users and Groups - Permits on Files - Special Attributes on files - Archives and compressed files - RPM Packages ( Fedora, Red Hat and like) - YUM packages tool (Fedora, RedHat and alike) - DEB packages (Debian, Ubuntu and like) - APT packages tool (Debian, Ubuntu and alike) - View file content - Text Manipulation - Character set and Format file conversion - Filesystem Analysis - Format a Filesystem - Filesystem SWAP - Backup - CDROM - Networking (LAN / WiFi) - Microsoft Windows networks (samba) - IPTABLES (firewall) - Monitoring and debugging - Others useful commands - Pacman packages tool (Arch, Frugalware and alike) -

Search a Command


	LinuxCMD Search
	Plug-in: Search button for Firefox and I.Explorer (it directly looks for the commands from your browser)
	Google Search

more than 400 instructional approaches of linux commands, practical examples, popular commands...

TOP ^

use Open Software!

#Contact US

Except where otherwise specified, the contents of LinuxCmd.org are licensed under License Creative Commons 2.5 Attribution

Free Distribution if provided Authors and, Not Commercial purposes and, Not Derivated Works 2.5

LinuxCmd.org

Logos and trademarks used for the link are owned the legitimate owners