fsck(8) on macOS
The text 65bb24b09f9a, as OS X 10.11.6, OS X 10.11.5, OS X 10.11.4, OS X 10.11.3, OS X 10.11.2, OS X 10.11.1, OS X 10.11 shipped it.
filesystem consistency check and interactive repair
Flags it lists
-
-R -
-f -
-l -
-n -
-p -
-q -
-y