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Basic Linux Commands This page contains a table of basic Linux commands and their uses. Many of them will not need to be used specifically to create or analyze ntuple files, but are still useful enough to be included here. Possibly the most useful command is 'man [x]', since it will give you complete information about any other command you type in place of [x]. This command reference was borrowed from http://www.justlinux.com/nhf/Command_Reference. Command Description cd x (or cd /x) go to directory x cd .. go up one directory x then [tab] <beep> [tab] view all commands starting with x ls (or dir) list a directory mv x y move or rename file x to file y cp x y copy file x to file y rm x delete a file mkdir x make a directory rm -r x remove directory x and all its underlying files man x get a manual page about command x less x or cat x | more view text file x cat view a textfile on the terminal pico x or ed x or vi x edit text file x echo print something on the screen chmod <permissions> <file> Change file permissions chown <owner> <file> Change file ownership chgrp <group name> <file> Change file group ownership ls -ao List all files in current directory, in alphabetical order, including file sizes, owners, permissions, and dates. ln -s x y Make a symbolic link to x named y find x -name y -print find file y, begin the search from within directory x and print the results to the screen ps -e to view all running processes kill -9 x to terminate process x (x is PID from ps) ./foo run program or script foo (in current dir.)