Wednesday, December 30, 2009

Linux commands

A


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alias - create names or abbreviations for commands


apropos - search the manual page names and descriptions


at [man page] - queue, examine or delete jobs for later execution


B

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bc [man page] - An arbitrary precision calculator language


C

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cal - displays a calendar


cat [man page] - concatenate files and print on the standard output


cd - change directory


chgrp [man page] - change group ownership


chmod [man page] - change file access permissions


cksum [man page] - checksum and count the bytes in a file


cp [man page] - copy files and directories


csplit [man page] - split a file into sections determined by context lines


D


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date [man page] - print or set the system date and time


dd [man page] - convert and copy a file


du [man page] - estimate file space usage


E


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egrep [man page] - print lines matching a pattern


export - set an environment variable


F


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fgrep [man page] - print lines matching a pattern


find [man page] - search for files in a directory hierarchy


fold [man page] - wrap each input line to fit in specified width


G


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grep [man page] - print lines matching a pattern


H

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head [man page] - output the first part of files


I


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J


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join [man page] - join lines of two files on a common field


K


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L


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logrotate [man page] - rotates, compresses, and mails system logs


ls [man page] - list directory contents


M


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mkdir [man page] - make directories


mv [man page] - move (rename) files


mount [man page] - mount a file system


N

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nl [man page] - number lines of files


O


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od [man page] - dump files in octal and other formats


P


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pwd [man page] - print name of current/working directory


Q
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R

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rgrep [man page] - print lines matching a pattern


rm [man page] - remove files or directories


S


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scp - secure copy (remote file copy program)


ssh - OpenSSH SSH client (remote login program)


T

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tail [man page] - output the last part of files


tar [man page] - The GNU version of the tar archiving utility


tee [man page] - read from standard input and write to standard output and files


time [man page] - run programs and summarize system resource usage


touch [man page] - change file timestamps


V

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vim - Vi IMproved, a programmers text editor


W


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watch [man page] - execute a program periodically, showing output fullscreen


wc [man page] - print newline, word, and byte counts for each file


whoami [man page] - print effective userid


X


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Y
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yes [man page] - output a string repeatedly until killed

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