How to install Bitdefender Antivirus in Ubuntu 10.10+

sudo gedit /etc/apt/sources.list

Add the line:

deb http://download.bitdefender.com/repos/deb/ bitdefender non-free

Then the following commands to download and import the key, update APT, and then install BitDefender;

sudo wget http://download.bitdefender.com/repos/deb/bd.key.asc
sudo apt-key add bd.key.asc
sudo apt-get update
sudo apt-get install bitdefender-scanner

The scan can then be run shell, the log will be placed in your Nepenthes log folder (/var/log/nepenthes):

sudo bdscan --log=/var/log/nepenthes/scan.txt /var/lib/nepenthes/binaries

source: