cu(1) on OpenBSD
The text e0b2cf76ffda, as OpenBSD 5.3, OpenBSD 5.2, OpenBSD 5.1, OpenBSD 5.0, OpenBSD 4.9, OpenBSD 4.8 shipped it.
serial terminal emulator
Flags it lists
-
-e -
-h -
-l -
-o -
-s -
-speed