安装Setup Automatic Updates on Debian

Log into the Debian device
Run the following commands in a terminal:
# update software repositories
sudo apt update
# install software updates
sudo apt upgrade -y
# install unattended-upgrades
sudo apt install unattended-upgrades -y
# edit unattended-upgrades config
sudo nano /etc/apt/apt.conf.d/50unattended-upgrades
Update the unattended-upgrades conf as needed
Uncomment the ::Mail line and edit the email address to receive email notifications

Unattended-Upgrade::Mail "i12bretro@i12bretro.local";

Uncomment and set the value to true to automatically remove unused dependencies

Unattended-Upgrade::Remove-Unused-Dependencies "true";
Press CTRL+O, Enter, CTRL+X to write the changes
Continue with the following commands
# at the prompt, select Yes to enable automatic updates
sudo dpkg-reconfigure --priority=low unattended-upgrades
# enable and start the unattended upgrades service
sudo systemctl enable unattended-upgrades --now
That's it, updates will now be installed automatically. Logs can be found in /var/log/unattended-upgrades
To run updates on demand, simply run the following command
sudo unattended-upgrade -d