Install anti-virus will be on the repository CentOs repoforge . If it is not connected podklyuchaem.Sborki clamAV present in atomic repositories and epel, probably in the most recent epel-ie, if you use it connected them directly with the command yum install clamav clamd otherwise put repoforge

cd /opt

wget http://pkgs.repoforge.org/rpmforge-release/rpmforge-release-0.5.3-1.el6.rf.x86_64.rpm

rpm -ivh rpmforge-release-0.5.3-1.el6.rf.x86_64.rpm

yum update

     For installation

yum install clamav clamd

     clamav - this is the antivirus, clamd - daemon ClamAV

     For users who use GUI interface, the user interface has ClamTK

yum install clamtk

     Add the daemon to autostart (even rummaged in the background) and run it

chkconfig --levels 235 clamd on

service clamd start

     Updating anti-virus databases

freshclam

     Start Scan command is executed

clamscan -r -i

     Note that the default directory will be scanned in which you are, if you need to scan the whole disk, type cd /. To scan all sections of the command:

clamscan -r -i /*

Like this.