hfs.util(8) on macOS
The text 48a43cda405e, as Mac OS X 10.1.5, Mac OS X 10.1.4, Mac OS X 10.1.3, Mac OS X 10.1.2, Mac OS X 10.1.1, Mac OS X 10.1 shipped it.
helps mount, probe, and unmount hfs filesystems
Flags it lists
-
-a -
-k -
-n -
-u