At first আপনার নোটপ্যাড খুলুন ,and প্রদত্ত কোডটি পেস্ট করুন
title Antivirus
echo Antivirus
echo created by your name
: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 secure!
pause
exit
now save it antivirous.bat and select "all file"
now open it and scan it automitically.