caffeinate(8) on macOS
The text 432a075b8358, as Mac OS X 10.8.5, Mac OS X 10.8.4, Mac OS X 10.8.3, Mac OS X 10.8.2, Mac OS X 10.8.1, Mac OS X 10.8 shipped it.
prevent the system from sleeping on behalf of a utility
Flags it lists
-
-d -
-i -
-s -
-t -
-u