how to save and exit from vim editor in ubuntu code example

Example 1: vi save and exit

//Save
:w
//Exit
:q

Example 2: how to save any changes in vi editor

#save changes in vi editor

by press i you can `Insert` anything. After finshing changes then press :(colon)
and type wq!

syntex : wq!

Explanation : The ex mode is an extension of command mode. To get into it, 
press Esc and then : (the colon). 
The cursor will go to the bottom of the screen at a colon prompt. 
Write your file by entering :w and quit by entering :q. 
You can combine these to save and exit by entering :wq. 
However, if you're finished with your file, it's generally more convenient to type Shift-z-z from command mode.

Example 3: how to get out from vim editor

#how to get out from vim Editor (linux)

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