SSHAddrstring`kong:"flag,name='ssh-listen-addr',env='HGK_SSH_LISTEN_ADDR',short='l',help='what address to listen on',default=':22222'"`
SSHHostKeysPathstring`kong:"flag,name='ssh-host-keys-path',env='HGK_SSH_HOST_KEYS_PATH',short='H',help='the path where host keys are kept',default='host-keys'"`