avast, the most widely installed Antivirus solution.
avast Core Security Linux
Avast Core Security
Features
Choose scanning mode. Get a core scanner with a command-line utility for on-demand scanning, or integrate it with AMaViS to protect your email server. 64-bit x86? No problem. Looking for protection that supports your 64-bit Linux server? Good news, you've just found it.
Key technology:
Combat the newest threats.Our truly unique CommunityIQ brings 215 million devices together to provide you with the best possible protection in real time.
System Requirements:
Supported Systems -CentOS 6 and newer -Debian 7 and newer Also works with -Red Hat Enterprise Linux 6 -Ubuntu LTS 12.4