SITL install and run on Mac using vagrant

I’ve been suffering with this simulator for a long now.
I installed it on Ubuntu 1st, however I couldn’t figure out how to stop it or exit it…this is my 1st question.
second, if I just closed the terminal to close it, so the next time I try to run it never works (error : command not found). how I can operate it?
I’m trying to install it on mac using vagrant however I’ve been 4 days now can’t figure it out as it has same problems as ubuntu
can anyone help pls?