ssh-keyscan(1) on macOS
The text 129ef5cd161c, as macOS 10.13.1, macOS 10.13, macOS 10.12.6, macOS 10.12.5, macOS 10.12.4, macOS 10.12.3, macOS 10.12.2, macOS 10.12.1, macOS 10.12 shipped it.
gather ssh public keys
Flags it lists
-
-4 -
-6 -
-H -
-T -
-c -
-f -
-p -
-t -
-v