htpasswd(1) on macOS
The text 58f223c6cbcb, as Mac OS X 10.1.5, Mac OS X 10.1.4, Mac OS X 10.1.3, Mac OS X 10.1.2, Mac OS X 10.1.1, Mac OS X 10.1 shipped it.
Create and update user authentication files
Flags it lists
-
-b -
-c -
-d -
-m -
-n -
-p -
-s