Ctl-Z (Background a Unix process)

7) Ctl-Z — Background a unix process

Ctl-Z (or Control-Z on your keyboard) is “background” which means “send the process to the background.” It frees up your shell prompt for more commands but keeps the process running. When you hit Ctl-Z, Rails says this slightly confusing message:

stopping rails vs backgrounding it
What happens when you CTL-Z a running Rails app

What’s slightly confusing is that the app isn’t actually stopped at all, it is now just running in the background. (See #9)