a add after cursor

A add to end of line

i insert before cursor

I insert before first nonblank

o open line below cursor

O open line above cursor

dd delete line

d w delete word

x delete character under cursor

X delete character to left of cursor

D delete rest of line

u undo last change

U restore current line

. repeat last change

r replace character under cursor

R write over text starting at cursor

~ change case

c w change word

J join

 split

: 1,$s/X/Y/opt

Global substitute X with Y

options:

g - change every occurrence in line

c - confirm each change

p - print changed lines

Y yank into buffer

p put buffer after cursor

P put buffer before cursor

/X search forward for X

?X search backward for X

n repeat previous search in the specified direction

N repeat previous search in the opposite direction

: g/pattern/p print every line with pattern in it

(must use set magic option first)

. any character

* any number of the preceeding pattern

[abc] a, or b, or c

[^abc] any character but a, b, and c

[a-b] any character between a and b

^ l clear and redraw

: w name write to file name

: q! quit without saving changes

: wq write and quit

ZZ write and quit

: n edit next file

: n! edit next file, discarding changes to current

: r name read file name into buffer

:set magic allow special search patterns