Automatic Updates

sudo apt-get install unattended-upgrades mailutils

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

APT::Periodic::Download-Upgradeable-Packages "1";

APT::Periodic::AutocleanInterval "1";

APT::Periodic::Unattended-Upgrade "1";

// Automatically upgrade packages from these (origin:archive) pairs

Unattended-Upgrade::Allowed-Origins {

        "${distro_id}:${distro_codename}";                                    //add this line

        "${distro_id}:${distro_codename}-security";                           //uncomment this line

        "${distro_id}:${distro_codename}-updates";                            //uncomment this line

//      "${distro_id}:${distro_codename}-proposed";

//      "${distro_id}:${distro_codename}-backports";

};

// List of packages to not update (regexp are supported)

Unattended-Upgrade::Package-Blacklist {

//      "vim";

//      "libc6";

//      "libc6-dev";

//      "libc6-i686";

};

// This option allows you to control if on a unclean dpkg exit

// unattended-upgrades will automatically run

//   dpkg --force-confold --configure -a

// The default is true, to ensure updates keep getting installed

//Unattended-Upgrade::AutoFixInterruptedDpkg "false";

// Split the upgrade into the smallest possible chunks so that

// they can be interrupted with SIGUSR1. This makes the upgrade

// a bit slower but it has the benefit that shutdown while a upgrade

// is running is possible (with a small delay)

//Unattended-Upgrade::MinimalSteps "true";

// Install all unattended-upgrades when the machine is shuting down

// instead of doing it in the background while the machine is running

// This will (obviously) make shutdown slower

//Unattended-Upgrade::InstallOnShutdown "true";

// Send email to this address for problems or packages upgrades

// If empty or unset then no email is sent, make sure that you

// have a working mail setup on your system. A package that provides

// 'mailx' must be installed. E.g. "user@example.com"

Unattended-Upgrade::Mail "[email address]";                                    //uncomment this line and add your email address

// Set this value to "true" to get emails only on errors. Default

// is to always send a mail if Unattended-Upgrade::Mail is set

//Unattended-Upgrade::MailOnlyOnError "true";

// Do automatic removal of new unused dependencies after the upgrade

// (equivalent to apt-get autoremove)

Unattended-Upgrade::Remove-Unused-Dependencies "true";                         //uncomment this line

// Automatically reboot *WITHOUT CONFIRMATION*

//  if the file /var/run/reboot-required is found after the upgrade

//Unattended-Upgrade::Automatic-Reboot "false";

// If automatic reboot is enabled and needed, reboot at the specific

// time instead of immediately

//  Default: "now"

//Unattended-Upgrade::Automatic-Reboot-Time "02:00";

// Use apt bandwidth limit feature, this example limits the download

// speed to 70kb/sec

//Acquire::http::Dl-Limit "70";

if [ -f /var/run/reboot-required ]; then

    echo "Automatic updates require a reboot of your computer" | mail -s "Reboot Required" [email address recipient]

fi