SSH/4/SAVEAS_PUBLICKEY:When deciding whether to save the server's public key [public-key-name] as another name, the user chose [Y/N].
When deciding whether to save the server's public key as another name, the user needs to confirm.
[public-key-name]
indicates the name of a public key.
[Y/N]
prompts a user to confirm the action.
A confirmation is required for the user to run a command.