Cmd	Note
Activating Modes
i	activate insert mode
I	move cursor to beginning of line and activate insert mode
a	move cursor forward one and activate insert mode
A	append - move to end of line and activate insert mode
r	replace single character
R	activate replace mode
v	activate highlight (visual) mode
Basic Editing
x	delete single character
~	switch case of selected
dw	delete word
d$	delete to end of line
dd	delete current line
D	clear line without removing line
o	add line beneath cursor
O	add line above cursor
>>	indent curent line
y	copy (highlighted text)
yy	copy full line
p	put, paste last deleted content from d, x, or y action
u	undo last change
ctrl-r	redo
Cool combos
xp	switch letters, the cursor letter with the one following it
ea	append word
v$	highlight rest of line
yw	copy current word
yykp	copy and paste line above it
cw	delete current word and activate insert mode
g;, g,	go back, forward through changelist
gi	move to last place inserted text
vib	select everything in current parenthesis
viB	select everything in current braces
veU, veu	make current word uppercase, lowercase
Moving around
}	move to next block
{	move to previous block
w	move 1 word forward (beginning of next word)
e	move to end of word
0	move to start of line
%	go to matching (,[, or {
G	move to bottom of file
gg	move to top of file
<#>G or <#>gg	move to <#> line
zz	center page on current line
ctrl-o	move to last position
ctrl-i	move forward positions
Find and Replace
/	search command
?	backward search command
n, N	find next, previous in search
/\c	search case insensitive
/^\n\{3}	find 3 emtpy lines
:s/<word1>/<word2>/g	replace all <word1> with <word2> in line
:%s/<word1>/<word2>/g	replace all <word1> with <word2> in whole file
Set
:set ic	set 'ignore case' in searching
:set noic	unset 'ignore case' in searching
:set <option>	set <option>
Other Commands
:!<cmd>	execute <cmd> in shell
:r <file>	inserts contents of <file>
:r !<cmd>	inserts output of <cmd>
:saveas <file>	save as
:q!	force quit no save
:wq	save and quit

Can use a digit before commands: x, d, y, u, w, e, >> to repeat action:

• 4dw: delete next 4 words
• 2o: add 2 new lines
• 5u: undo last 5 edits
• 4>>: indent 4 lines once
• 6yy: copy 6 lines