ypinit(8) on OpenBSD
The text 6040b350d343, as OpenBSD 5.3, OpenBSD 5.2, OpenBSD 5.1, OpenBSD 5.0, OpenBSD 4.9, OpenBSD 4.8, OpenBSD 4.7 shipped it.
create a YP server (master or slave)
Flags it lists
-
-m -
-u