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Linux Command Reference Index ( GNU / linux kernel 2.4.18-3, 2.4.18-14 and 2.4.20-6 )
Linux is a registered trademark of Linus
Torvalds
These are just a few of the most common GNU
/ Linux commands that you may find yourself looking for, along with
some answers to common questions about running
Linux.
On most systems more information about a command can be found by typing [ man command ] ; man being the word man and command being the particular command you are checking.
You will need to be root to use some of these commands ; also be sure to check your path. If there is no path to the command then you will likely get a " command not found " error. Check the command to be sure you have typed it correctly. Be extremely careful as root , you can make your system unusable. This is very important to understand. If you are using a dual boot system you may not be able to access either system if you make a mistake as root and your system is not bootable. Before you type any command as root be absolutely certain of what you are doing. Any comments are encouraged and welcome at dave@perpetualpc.net
On most systems more information about a command can be found by typing [ man command ] ; man being the word man and command being the particular command you are checking.
You will need to be root to use some of these commands ; also be sure to check your path. If there is no path to the command then you will likely get a " command not found " error. Check the command to be sure you have typed it correctly. Be extremely careful as root , you can make your system unusable. This is very important to understand. If you are using a dual boot system you may not be able to access either system if you make a mistake as root and your system is not bootable. Before you type any command as root be absolutely certain of what you are doing. Any comments are encouraged and welcome at dave@perpetualpc.net
page last modified 2005-02-22
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Commands
alias Create your own name for
a command
bc Command line calculator bunzip2 Unzip .bz2 files cat Concatenate a file print it to the screen chgrp Change the group designation of a file chmod Change file permissions chown Change the owner of a file comm Compare two sorted files cooked Formatting the display of text in a terminal cp Copy command date Display date and time dc Command line calculator df Show amount of disk space free diff Determine difference between two files diff3 Determine difference between 3 files du Show disk useage env Dislay the path eject Eject media from device ( command line ) factor Display prime factors of a number fdisk The fdisk command with usage examples find Find a file free Display free memory grep Search for a pattern using regular expression gunzip Unzip .gz files hdparm Get/set harddisk parameters history Display entire command history HISTSIZE Change history size httpd Start Apache ifconfig Display network and hardware addresses locate Locate a file ls List directory contents lsmod List loaded kernel modules man Display a particular manual entry mkfs Make a filesystem on a drive mount Mount a filesystem/device |
netstat Display verbose info about network processes and ports nice Run a command with modified priority pr Format for printing ps Processes running pwd Print Working Directory resize Xterm window size rpm rpm command options set gid Set group id set serial Get / set Linux serial port info set uid Set user id sfdisk Modified fdisk program sftp Secure file transfer protocol (ftp) shred Safely remove data from disk drive sort Sort lines of a text file ssh Secure shell connection command stty raw Unformatted output to terminal su Become super user ( root ) top Display processes running touch Change file timestamps tree Display file tree tty Print name of terminal connected to standard output umask File creation mask / Bash builtins uname Print system information ( kernel version ) uniq Remove duplicate lines from sorted file updatedb Update the slocate database unset gid Group id change unset uid User id change untar Unarchive ( untar ) a file unzip Unzip .zip files useradd Add new user wc Word count of a file whereis Locate a command or file which Find command path xinit Start Xserver xrandr Change resolution running Xwindows ( command line ) |
References and answers to questions about running Linux
Copyright (c) 2002 David Tarsi. Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.1 or any later version published by the Free Software Foundation; with the Invariant Sections being no invariant sections, with the Front-Cover Texts being no Front-Cover Texts, and with the Back-Cover Texts being no Back-Cover Texts. A copy of the license is included in the section entitled "GNU Free Documentation License".
GNU Free Documentation License
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