For authentication, rcmd will use the certificate in the file

/usr/username/keyring/net!machine

if it exists, and otherwise it will use the certificate in

/usr/username/keyring/default.

The -e option sets the algorithm cryptoalg to be used following authentication for digesting or encryption. See ssl(3) for the supported algorithms. The default is none: ssl(3) is not used after authentication.

The -x option sets the path to be exported as root from the local machine (defaults to / if not specified).