You don't need an anti-virus program on Linux: I've said it before, but Don't Surf in the Nude started because of an interest in internet security, so I can't resist trying out anti-virus programs in Linux.
I noticed today that Comodo has produced a Linux anti-virus program with real-time scanning. Files are checked as they are accessed or created- for example as they are downloaded from the Internet.
I couldn't resist trying it out.
rest here