how to exit vi editor code example

Example 1: exit vim

#Press 'Esc' to change from Edit Mode to Command Mode
#Exit
:q
#Force quit without saving
:q!
#Save file and quit
:wq

Example 2: vim discard changes and quit command

Vim editor:
Insert: hit I key
Discard and exit: esc q!
Save and exit: esc qw

Example 3: how to exit vi in linux

(without saving changes)
if in insert or append mode press Esc.
else type ":q!" and press Enter