If you still need antivirus on Linux and have known antivirus clamav but you find it difficult because there is no GUI (Graphic User Interface) in operation, and then the solution is to install CLAMTK.
CLAMTK is based antivirus ClamAV but include a GUI (Graphic User Interface) to simplify the scanning process & system files from your Linux virus
How to install it:
for debian / ubuntu and its derivatives:
$sudo apt-get install clamtk
for other distros:
Fedora: http://sourceforge.net/projects/clamtk/files/ClamTk/4.29/clamtk-4.29-1.fc.noarch.rpm/download CentOS: http://sourceforge.net/projects/clamtk/files/ClamTk/4.29/clamtk-4.29-1.el5.noarch.rpm/download In the form of tar.gz file: http://sourceforge.net/projects/clamtk/files/ClamTk/4.29/clamtk-4.29.tar.gz/download