04 unix commands
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This document provides a cheat sheet of common UNIX commands, describing what each command does and providing examples of usage and options. It outlines commands for navigating directories, modifying directories and files, viewing files in terminals, and using wildcards and pipes. Common text editors like emacs and vim are also listed. The cheat sheet is intended to help users learn important commands for file manipulation, permissions, job management, searching, and other miscellaneous tasks.
04 unix commands
- 1. UNIX Command Cheat Sheet Physics 91 SI Handout 04 Alex Ji and Zahan Malkani Command Description Examples and Options Most Important Command! man Manual for other commands. man cat Navigating Directories ls List the contents of the directory. ls -lart /afs/ir.stanford.edu cd Change directory. cd WWW/ pwd Print working directory. pwd Modifying Directories and Files mkdir Make new directory. mkdir physics91SI rmdir Remove directory. rmdir physics91SI mv Move 鍖les. mv -i foo.txt foo2.txt cp Copy 鍖les. cp -i ../foo.txt . rm Remove 鍖les. (Cannot undo!) rm -i foo.txt Viewing Files in Terminal less View 鍖les easily. less foo.txt cat Concatenate 鍖les. cat foo1.txt foo2.txt Important Symbols * Wild card, any number of charac- ters. ls *.txt ? Wild card, 0 or 1 characters. ls foo?.txt . Current directory. cd . .. Directory one level up. cd .. & Run process in background. emacs & | Pipe/鍖lter output through another program. cat foo.txt | less > Redirect standard output to. cat foo.txt > foo2.txt < Redirect standard input from. less < foo.txt Common text editors: emacs, vim, vi, pico, nano
- 2. Command Description Examples and Options File Manipulation (Fill out yourself) wc sort head tail split cut paste uniq pr Permissions (Fill out yourself) chmod Job Manipulation (Fill out yourself) ps kill jobs fg bg Ctrl-z Ctrl-c Searching (Fill out yourself) grep find Miscellaneous (Fill out yourself) touch who whoami du diff