Important Unix/Linux Commands

cd

change directory
Example: cd html/assign1

chmod

change mode (permissions)
Example: chmod 755 myscript.cgi

cp

copy files
Example: cp myoldscript.cgi mynewscript.cgi

ll

list long (with permissions, sizes, etc.)
Example: ll html/

ls

list (file names)
Example: ls

mkdir

make directory
Example: mkdir assign1

mv

move (rename) files
Example: mv myoldscript.cgi mynewscript.cgi

rm

remove (files)
Example: rm script1.cgi

rmdir

delete an empty directory
Example: rmdir html/assign10

rm -r

delete a directory and its files
Example: rm -r html/assign10

pwd

display the path to the current directory
Example: pwd