Get LINUX prompt

//!

    SETUP:        PC on net running serial terminal
    ------        EV3 running on net with WiFi dongle        

    GET IP:       Get EV3 IP address (xxx.xxx.xxx.xxx) from the bottom of "Brick Info"
    -------

    OPEN TELNET:  Open a telnet connection on a PC console to the EV3 IP address (xxx.xxx.xxx.xxx)
    ------------

telnet xxx.xxx.xxx.xxx

    GET PROMPT:   EV3 will asks for login
                  Type "root" as login and the EV3 should give a prompt like:
                  root@EV3:~#
    
//!