Vi editor and its usage

:q	quits
:q!	forces to quit without saving
:w	save
h	left
k	up
j	down
l	right
$	move to the end of the line
0	move to the beginning of the line
Ctrl+f	shows next screendisplay
Ctrl+b	shows the screendisplay before
Ctrl+u	show screen half way up
Ctrl+d	show screen half way down
w	move forward one word
b	move backward one word
O	open a new line over the one you are at
o	open a new line under the one you are at
:!command	quickly use unix commands while staying in vi.
!!command	outputs the command inside of vi to current line.
!}command	takes the input from the lines and output to given command
!}fmt	reformats the text
G	goes to the last line
3G	goes to line number 3
vi +17	starts vi from line number 17
vi +/name	starts vi from first found word name
:s/old/new	changes old with new
:s/old/new/g	changes every old with new on the same line
:1,$ s/old/new/g	changes all old in every line with new
!G	uses the given command for all lines (mut place the marker on 1st line)
Ctrl+g	shows the current line number and other info
:/	searches string forward (n repeats search)
:?	searches string backward (SHIFT-n repeats search in oppersite direction)