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UNIX Principle 3

cpsc 2010 unix vocab :D

TermDefinition
diff difference. find differences, if any, between two files: xxx file1 file2
grep generate regular expression and print. searches text or files for lines that match a specific pattern. search using regular expressions: ls | xxx "html" or xxx "milk" shopping.txt
grep -i searches for text or files for lines that match a specific pattern but ignores capitalization: xxx -x "apples" shopping.txt
grep -n searches for text or files for lines that match a specific pattern and shows line it shows up in: xxx -x "bread" shopping.txt
file file type. determine type of file: xxx . .
stat file/directory status. get file system status: xxx filename
--help in addition to the man command, most UNIX commands support the xxx command line argument to give a succinct synopsis fo the command: man xxx
whoami return the netid of the user: xxx
id identify. return teh various integer ids associated with the user: xxx
uptime how long has teh system been running sinc elast reboot: xxx
who who is currently logged in?
who -r who is currently logged in and what are they running?
w what are users running?
last when did users last access the system? (defaults to reboot)
last -n view most recent xxx -x users
uname what flavor of unix are we running?
lsb_release what release of linux are we running?
du disk usage. how much disk space is being used under this directory?
quota disk xxx. how much disk space am i allowed?
free display the amount of xxx and used memory in the system
finger displays information about the system users
info displays information on most of teh core unix commands using the emacs editor. if you see imacs, you should use. xxx ls
Created by: azran09
 

 



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