[linux] vi commands

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here are some VI commands, just as remember block

VI Commands:

i		insert mode, (ESC to exit insert mode) allows text to be entered on the screen
a		Append to right mode
/word		Move to the occurrence of “word”
n		Locate the next occurance
w		Advance to the next word
e		Advance to the next end of a word
b		Move to the previous word
3b		Move backward 3 words
dd		delete line
3dd		delete 3 lines
D		Delete remainder of a line
dw		Delete word
x		Delete character
o		Open space for new line below the cursor line
O		Open a line above the cursor
CTRL-w		Move back a word in append mode
u		Undo last
U		Undo all changes to current line
.		In command mode, repeat the last text changing the command on the current line
:w newfilename		save the file to newfilename from the command mode
:wq		save and quit
:q!		quit without saving
r		replace then typa a character ot be replaced with r then return to break up a line
J		join 2 lines
s		substitute (sentence) typed text over a character, ESC when done
cw		change word
c		change part of a line from the cursor to the end of the line
cc		substitute new text for aline, ESC when done
h		move the cursor back one space
H		move the cursor to the highest line on the screen
L		move the cursor to the lowest line on the screen
M		position the cursor at the midpoint on the screen
G		last line in the file
0 (zero)		Move the cursor to the beginning of the line it is on
view filename		Open a file for viewing only
set number		Turn on line numbers
set nonumber		Turn off line numbers