Unix Manual PagesAn introductory tutorial on Unix... Regular Expressions... Perl and Unix... Help with vi... Shell scripting... The 10 Unix commands every beginner needs to know... The 10 most misunderstood commands... Alphabetic list of commands... Copyright/Copyleft info... |
Core CommandsWith many competing standards (UNIX 98, UNIX95, POSIX.2, SVID3, 4.3BSD, etc.) and most users having to deal with multiple systems, it's crucial to know which commands are fundamental enough to be used on nearly every version of Unix. Keep in mind, however, that the person who installed/maintains the system has surely added and removed many commands. at - execute commands at a later time awk - pattern scanning and processing language basename - deliver portions of path names cat - concatenate and display files cd - change working directory chgrp - change file group ownership chmod - change the permissions mode of a file chown - change file ownership cmp - compare two files comm - select or reject lines common to two files cp - copy files date - write the date and time dd - convert and copy a file df - report number of free disk blocks and files diff - display line-by-line differences between pairs of text files echo - echo arguments ed - text editor ex - text editor exit - terminate a process expr - evaluate arguments as an expression false - provide truth values file - determine file type find - find files grep - search a file for a pattern head - display first few lines of files join - relational database operator kill - terminate or signal processes ln - make hard or symbolic links to files ls - list contents of directory man - display manual pages mesg - permit or deny messages mkdir - make directories more - browse or page through a text file mv - move files nice - invoke a command with an altered scheduling priority od - octal dump pr - print files ps - report process status pwd - return working directory name rm - remove directory entries rmdir - remove directory entries sed - stream editor sh - standard and job control shell and command interpreter sleep - suspend execution for an interval sort - sort, merge, or sequence check text files split - split a file into pieces stty - set the options for a terminal tabs - set tabs on a terminal tail - deliver the last part of a file test - evaluate condition(s) or make execution of actions dependent upon the evaluation of condition(s) time - time a simple command touch - change file access and modification times tr - translate characters true - provide truth values tty - return user's terminal name uudecode - encode a binary file, or decode its encoded representation uuencode - encode a binary file, or decode its encoded representation vi - screen-oriented (visual) display editor based on ex wait - await process completion wc - display a count of lines, words and characters in a file who - who is on the system write - write to another user |
| © 1999-2009 Matchstick Consulting |