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What did he just do?
At 2:57 in this video he presses a short cut key without telling you, what is it?
Edward Humphreys17,884 Points
He pressed "CTRL+X" to exit "Y" to accept the changes and then "return" accepts the changes and gets you back to the prompt
Fuad AdetoroiOS Development Techdegree Student 11,599 Points
He was on the unix based editor nano, he just saved the file.
You can do this by hitting CTRL+X to exit I think if there is unsaved things it would ask for it to be saved before exiting.