mount(8) on macOS
The text 18d3c9cac5e6, 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, Mac OS X 10.7.5, Mac OS X 10.7.4, Mac OS X 10.7.3, Mac OS X 10.7.2, Mac OS X 10.7.1, Mac OS X 10.7 shipped it.
mount file systems
Flags it lists
-
-a -
-d -
-f -
-o -
-r -
-u -
-v -
-w