Vim does not save exit

for beginners who are just starting out with the Vi/vim text editor, how do I exit the Vi/vim text editor without saving changes? When you use the Linux vi/vim text editor to edit a configuration file under Linux, when you are finished, you can save the exit file, or you can leave the Vi/vim editor without saving, that is, all the changed actions are not saved.

It will tell you how to not save and exit the current Vi/vim editor.

First, when you change the file by Vi/vim, pressESC, exitInsertmode, and then enter a colon (:) followed by the following command:q!

Vim does not save exit