clamscan()
  ClamAV command line realscanner.
  
  This scanner 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.
  
  It can be easily used in chroot. mkchroot.sh from sagator package
  automatically integrates it into chroot environment.
  
  Requires: clamscan binary from clamav
  
  Usage: clamscan(['/usr/bin/clamscan','--stdout','--infected',
                   '--no-summary','-r'])
  
  Where: in [] are command line parameters for clamscan binary