/*! \mainpage ASD Tutorial Lesson 4: shell

This lesson builds a service (a simple "shell" application) on top of the TCP server we built in lesson 3.  

To use the shell, simply telnet to the raven and press "?" when prompted

\em server.c - initializes the wireless interface, starts TCP server

\em shell.c - manages the TCP connection

\em cmd.c - provides the shell service

*/