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Important vi command for text editing in Linux

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Examples
vi /etc/dhakatips.txt
Edits the file dhakatips.txt
:q!
Typing the above command would exit the vi edit done with the above command.

Arrow keys	Move cursor
hjkl	Same as arrow keys
itextESC	Insert text
cwnewESC	Change word to new
easESC	pluralize word (end of word; append s; escape from input state)
x	delete a character
dw	delete a word
dd	delete a line
3dd	deletes 3 lines
u	undo previous change
ZZ	exit vi , saving changes
:q!CR	quit, discarding changes
/textCR	search for text
^U ^D	scroll up or down
:cmdCR	any ex or ed command
ESC	end insert or incomplete command
DEL	(delete or rubout) interrupts
:wCR	write back changes
:w!CR	forced write, if permission originally not valid
:qCR	quit
:q!CR	quit, discard changes
:e nameCR	edit file name
:e!CR	reedit, discard changes
:e + nameCR	edit, starting at end
:e +nCR	edit, starting at line n
:e #CR	edit alternate file
:e! #CR	edit alternate file, discard changes
:w nameCR	write file name
:w! nameCR	overwrite file name
:shCR	run shell, then return
:!cmdCR	run cmd, then return
:nCR	edit next file in arglist
:n argsCR	specify new arglist
^G	show current file and line
:ta tagCR	position cursor to tag
F	forward screen
^B	backward screen
^D	scroll down half screen
^U	scroll up half screen
nG	go to the beginning of the specified line (end default), where n is a line number
/pat	next line matching pat
?pat	previous line matching pat

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