Difference between revisions of "Unix"
From Rizzo_Lab
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more view contents of a file | more view contents of a file | ||
diff show the difference between two files | diff show the difference between two files | ||
| − | grep search within a file | + | grep search within a file for specific text |
chmod change permission of a file or directory | chmod change permission of a file or directory | ||
whoami shows your username | whoami shows your username | ||
Revision as of 09:37, 9 February 2012
A great Unix tutorial is here http://www.ee.surrey.ac.uk/Teaching/Unix/
Linux Basics https://help.ubuntu.com/6.06/ubuntu/desktopguide/C/linux-basics.html
Contents
Resources
Looking at your environment
pwd print the current location ls ls the contents of the current location
Moving around
mkdir create a new directory rmdir remove a diretory cd go to a location by specifying the directory
Modifying your environment with files
vim create a new file or edit an existing file rm remove a file/directory cp copy a file/directory mv move a file/directory or change the name of a file/directory
More commands
man instructions for using commands cat print contents of a file more view contents of a file diff show the difference between two files grep search within a file for specific text chmod change permission of a file or directory whoami shows your username clear clear the screen ssh log on to a different computer scp copy files to/from a different computer tcsh execute a shell script ps -fu see current processing commands logout/exit logout of a computer
Other things to know
./ shortcut for 'current directory' ../ shortcut for 'parent directory' ~/ shortcut for 'home directory' > print something to a file >> append something to a file * shortcut for 'any strings of characters' | chain commands & run stuff in the background \ escape a character
Keyboard shortcuts
<tab> auto-complete <up arrow> see command history <Ctrl+c> interrupt a process <Ctrl+d> logout
Queuing commands for PBS (Seawulf only)
qsub submit a job to the queue qstat check on jobs in the queue qdel delete a job from the queue
