How to make a simple antivirus using notepad

@echo off
title Antivirus By TheTechTrax
echo Antivirus
echo Created By TheTechTrax
echo scanning....
echo scanning....
:start
IF EXIST virus.bat goto infected
IF NOT EXIST virus.bat goto clean
cd C:\Windows\system32

:infected
echo WARNING VIRUS DETECTED!
del virus.bat
pause
goto start

:clean
echo System Protected!
echo CREDITS: TheTechTrax By Ashwin
pause
start http://goo.gl/hCMb9
exit