md5(1) on OpenBSD
The text 4bac51a3d783, as OpenBSD 6.0, OpenBSD 5.9 shipped it.
calculate a message digest (checksum) for a file
Flags it lists
-
-C -
-b -
-c -
-h -
-p -
-q -
-r -
-s -
-t -
-x