Linux Common Commands

Vi

: W	Save the file without exiting VI
: W File	Save the modification to file without exiting VI
: w!	Forced to save, do not launch VI
: Wq	Save the file and Exit VI
: wq!	Force the file to be saved and exit VI
: Q	Do not save file, Exit VI
: q!	Do not save file, Force exit VI
: e!	Discard all changes and edit from the last time the file was saved
I	Enter edit state
Esc	Launch Edit Status, enter command receive status