deb https://download.virtualbox.org/virtualbox/debian contrib 接下来,下载并安装用于apt-secure的Oracle公钥,如下所示。 $ wget -q https://www.virtualbox.org/download/oracle_vbox_2016.asc -O- | sudo apt-key add – $ wget -q https://www.virtualbox.org/download/oracle_vbox.asc -O- | su...