vnc - VNC subcommands:
set-port - Set port the server binds to
enable - Enable the VNC backend
disable - Disable the VNC backend
set-password <password> - Set the VNC password
clear-password - Clear the VNC password
set-auth-method password|prompt - Set the authorization method
enable-view-only - Disable remote control of input
devices
disable-view-only - Enable remote control of input
devices
enable-port-negotiation - If unavailable, listen to
a different port
disable-port-negotiation - If unavailable, don't listen
to a different port
