sh(1) on OpenBSD
The text 4c50eb5edafa, as OpenBSD 5.9 shipped it.
command language interpreter
Flags it lists
-
-C -
-a -
-b -
-c -
-e -
-f -
-h -
-i -
-m -
-n -
-o -
-s -
-u -
-v -
-x