clamd()
  ClamAV daemon realscanner for clamav-1.0 or higher.
  
  This scanners is a realscanner, which can be used to scan
  for viruses. ClamAV is a free program under GPL and may be freely
  used. Its database is very well.
  
  If you need a chrooted clamd, copy it into chroot and start it
  from here. If you are not familiar with it, use clamscan scanner
  from this module. It easily does chroot support, but it
  is not powerfull.
  
  Requires: clamd-1.0+ (clamav daemon)
  
  Usage: clamd(['localhost', 3310])
     or: clamd('/var/spool/vscan/clamd')
  
  Where: 1st definition defines a clam daemon on host localhost,
             port 3310 (it is the default)
         2nd definition defines access to clamd via UNIX socket