instalar virtualbox Debian 9 / Devuan ascii

$ 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 -

# echo "deb http://download.virtualbox.org/virtualbox/debian stretch contrib" >> /etc/apt/sources.list

# apt-get update
# apt-get install virtualbox-6.0