Runs a remote shell (eg ssh) to connect to a remote machine and runs root-portal on that machine. The remote instance of root-portal executes in "slave-mode", so it everything it does is under the direction of the local instance. This is useful for monitoring the remote system.
The command to be used to execute the program on a remote machine. The command should not ask for a password and should produce no output besides that produced by the remote instance of the program.