apt-get install cron-apt
apt-get install unattended-upgrades
Edit the /etc/apt/apt.conf.d/50unattended-upgrades file
Remove the // to uncomment a line
Uncomment some lines shown below,
// Automatically upgrade packages from these (origin:archive) pairs
Unattended-Upgrade::Allowed-Origins {
"${distro_id}:${distro_codename}-security";
"${distro_id}:${distro_codename}-updates";
// Do automatic removal of new unused dependencies after the upgrade
// (equivalent to apt-get autoremove)
Unattended-Upgrade::Remove-Unused-Dependencies "true";
// Automatically reboot *WITHOUT CONFIRMATION*
// if the file /var/run/reboot-required is found after the upgrade
Unattended-Upgrade::Automatic-Reboot "true";
// If automatic reboot is enabled and needed, reboot at the specific
// time instead of immediately
// Default: "now"
Unattended-Upgrade::Automatic-Reboot-Time "05:20";
Edit the /etc/apt/apt.conf.d/10periodic file to look like this,
APT::Periodic::Enable "1";
APT::Periodic::Update-Package-Lists "1";
APT::Periodic::Download-Upgradeable-Packages "1";
APT::Periodic::AutocleanInterval "7";
APT::Periodic::Unattended-Upgrade "1";
Verify that /etc/apt/apt.conf.d/20auto-upgrades is correct,
APT::Periodic::Update-Package-Lists "1";
APT::Periodic::Unattended-Upgrade "1";
