Setting Up Automatic Updates on Debian

Having automatic updates on linux machine can be beneficial to stay up to date with latest patches. At very least security updates should be enabled

Set up Automatic Updates

1. Install Unattended Upgrades

sudo apt install unattended-upgrades apt-listchanges

At Very Least Reconfigure Unattended Upgrades for Security Patches

sudo dpkg-reconfigure --priority=low unattended-upgrades

2. Configure unattended-upgrades file

sudo nano /etc/apt/apt.conf.d/50unattended-upgrades

You can enable security updates and other types of updates by uncommenting the appropriate lines. 

Unattended-Upgrade::Allowed-Origins {
    "${distro_id}:${distro_codename}-security";
    "${distro_id}:${distro_codename}-updates";
};

3. Enable Automatic Updates

sudo nano /etc/apt/apt.conf.d/20auto-upgrades

Add or Modify following lines

APT::Periodic::Update-Package-Lists "1";
APT::Periodic::Unattended-Upgrade "1";

This configuration will check for updates daily