mtree(8) on macOS
The text 21490e470827, as macOS 13.2, macOS 13.1, macOS 13.0 shipped it.
map a directory hierarchy
Flags it lists
-
-K -
-L -
-P -
-S -
-U -
-X -
-c -
-d -
-e -
-f -
-i -
-k -
-n -
-p -
-q -
-r -
-s -
-u -
-w -
-x