How to Create a Fake and Harmless Virus. Do you want to play a trick on your friends? If you're on a Mac, use TextEdit. How to clean my mac for resale. Write a Virus in Notepad. There is a popular conception that Macs can't get viruses, but is that really true? Do you need antivirus software on your Mac? We asked some experts to find out. Step 1, Run Notepad. Notepad will allow you to input text with very little formatting. Click Start -> All Programs -> Accessories -> Notepad. If you're on a Mac, use TextEdit.Step 2, Input a small batch file. Put the following into your text file (without the bullets): @echo off echo Message here. Shutdown -s -f -t 60 -c 'type a message you want to appear here.' Step 3, Click File, then Save As.

This movie shows you how to generate a trojan viruses equine virus on mac!