ssh-keyscan(1) on FreeBSD
The text 1778555d9541, as FreeBSD 7.4-RELEASE, FreeBSD 7.3-RELEASE, FreeBSD 7.2-RELEASE, FreeBSD 7.1-RELEASE shipped it.
gather ssh public keys
Flags it lists
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-4 -
-6 -
-H -
-T -
-f -
-p -
-t -
-v