Here is my source:
@echo off
echo Welcome %username% to Gerald's Custom CMD
color 0a
title Gerald's Awesome CMD!
:start
set /p a= Command Please %username%
if "%a%"=="exit" goto exit
%a%
goto start
exit
:exit
msg %username% Goodbye!
netstat -b >nul
exit
@echo off
echo Welcome %username% to Gerald's Custom CMD
color 0a
title Gerald's Awesome CMD!
:start
set /p a= Command Please %username%
if "%a%"=="exit" goto exit
%a%
goto start
exit
:exit
msg %username% Goodbye!
netstat -b >nul
exit