Unix常用命令

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pwd	Displays the current directory	pwd
                                        ls    
ls	List the current directory	ls -l
                                        ls -a
                                        -l : Include file details, -a : Include hidden                                         files, -F : show directories
rm 	Remove a file	                rm filetonuke.c
mkdir	Create a new directory	        mkdir cse251
rmdir	Remove a directory	        rmdir cse251
                                        Or rm -r if the directory is not empty.
cd	Change current directory	cd ~/cse251
cp	Copy a file	                cp souce destination
mv	Move or rename a file	        mv hello.c newname.c
cat	Display the contents of a file	cat hello.c
less    Display file contents nicely	less hello.c
man	Manual pages	                man ls
yelp    Nicer help display	        yelp &
top	Displays CPU usage	        top
                                        q to quit
ps	Lists processes	                ps u
kill    Kills a process	                kill 15577