Definitely not a fake antivirus program for mac and linux to ensure PCI compliance.

realantivirus.sh

#!/bin/sh
# Software must have the ability to auto-update itself and virus definitions as well as log scan results.
#
# Don't read below this line.

echo 'Auto updating.'

sleep 30

echo 'Updaing virus definitions.'

sleep 30

echo 'Done updates'

echo

echo 'Scanning for viruses...'

sleep 60

echo 'No viruses found. Logging the results.'

cat 'No viruses' >> realantivirus.log