Seriously?a52735 wrote:Antivirus what is?
Application that scans files for known virus patterns and reports their presence on a file system, can "quarantine" infected files to a chroot jail or similar, and may be able to remove them completely from an infected system, depending on the individual program.
A repair tool rather than a preventative. Necessity played down by lack of malicious software targeting GNU/Linux OS at this time, but regarded as a courtesy towards Windows users if sharing files (just because a GNU/Linux system might not be infected doesn't mean it can't carry), and just because one's paranoid doesn't mean they're not onto one.
Clam-av, available from the repos, is probably a logical choice for GNU/Linux systems, being open source.