ypxfr(8) on OpenBSD
The text dc12d5b9dc6e, as OpenBSD 5.3, OpenBSD 5.2, OpenBSD 5.1, OpenBSD 5.0, OpenBSD 4.9, OpenBSD 4.8, OpenBSD 4.7, OpenBSD 4.6, OpenBSD 4.5, OpenBSD 4.4 shipped it.
get a YP map from YP server
Flags it lists
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-c -
-d -
-f -
-h -
-s