Some useful commands for vi Editor

Command	Action
x	delete one character
dw	delete current word
dd	delete current line
D	delete all content to the rigght of the cursor
:u	undo last command
:q	quit editor without saving
:wq	save and quit editor
:w	write without exit
:[n]	goto line [n]
b	move backwards one word
i	begin inserting text at the current cursor location