hfs.util(8) on macOS
The text c0fb8910de45, as Mac OS X 10.2.8.G5, Mac OS X 10.2.8, Mac OS X 10.2.7, Mac OS X 10.2.6, Mac OS X 10.2.5, Mac OS X 10.2.4, Mac OS X 10.2.3, Mac OS X 10.2.2, Mac OS X 10.2.1, Mac OS X 10.2 shipped it.
helps mount, probe, and unmount hfs filesystems
Flags it lists
-
-a -
-k -
-s -
-u