Unattended Upgrade

This article was tested on Debian 10 (buster).

Simply follow https://wiki.debian.org/UnattendedUpgrades. While that

• uncomment all four lines in “Unattended-Upgrade::Origins-Pattern”, as described in https://vitux.com/how-to-manage-unattended-upgrades-on-debian-10,
• install bsd-mailx for mail notification and
• prefere “Automatic call via /etc/apt/apt.conf.d/02periodic”.