Ubuntu 16.04安装Bitdefender的命令：
$ sudo sh -c 'echo "deb http://download.bitdefender.com/repos/deb/ bitdefender non-free" >> /etc/apt/sources.list'
$ 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-gui
运行BitDefender：
$ /opt/BitDefender-scanner/bin/bdgui
