But keep in mind this will exit without writting to the opened file. If you want to do that use :wq or :x (which I use often )
And changes will be discard when using !
When you enter vim, you are greeted by a friendly welcome screen with instructions.
But if you should be so unfortunate as to accidentally wander into vi, you are left gazing into the infinite black void, and may the gods have mercy on your soul.