How to save file in vi editor?

Hi,

Here are the details:

How to save file in vi editor?

1. Press 'Esc' button to go to the Command mode and ':' appears
2. Type :w to save the file
3. Type :wq to save and quit
4. Type :q! to quit without saving
5. Type :wq! to force write to file even if it does not have write permission
6. Type: x to write and quit and this command is short for :wq
7. Type :qa to quit all

Thanks

Here is the video instruction of saving the file in vi editor:

Thanks