ubuntu20.04安装VirtualBox并保持更新

 安装密钥

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- | sudo apt-key add -

添加VirtualBox的Repository

sudo add-apt-repository "deb http://download.virtualbox.org/virtualbox/debian $(lsb_release -cs) contrib"

安装最新VirtualBox

sudo apt-get update
sudo apt-get install virtualbox-6.1

参考：

https://www.virtualbox.org/wiki/Linux_Downloads

https://askubuntu.com/questions/705806/install-oracle-virtual-machine-by-adding-a-repository

https://phoenixnap.com/kb/install-virtualbox-on-ubuntu