Probably closed the terminal emulator it was running in and opened a new one before trying to find documentation at my leisure. One of the luxuries of learning Unix commands in a graphical environment.

For a more drastic noob story, I once rebooted a computer because I couldn't get out of GWBASIC. I was familiar with QBASIC at the time and that was a lot easier to get out of if you didn't know what you were doing.