ssh-keyscan(1) on OpenBSD
The text 129ef5cd161c, as OpenBSD 6.1, OpenBSD 6.0, OpenBSD 5.9 shipped it.
gather ssh public keys
Flags it lists
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-4 -
-6 -
-H -
-T -
-c -
-f -
-p -
-t -
-v