How do I enable automatic updates?

Question

Update Manager is constantly offering me updates (e.g. security fixes, updates from PPAs).

How can I tell my Ubuntu installation to automatically download and install updates whenever they become available?

Answer 1

You can do this for security updates, but not for all updates, or at least not very easily. To enable automatic security updates:

From System Settings open Update Manager. Click the 'Settings...' button, then on the 'Updates' tab, select the radio button 'Install security updates without confirmation.'

Answer 2

Using apt-get upgrade -y is a WRONG way of doing this because it will suppose you say YES to any question!

unattended-upgrades is the best practice of having automatic updates!

You can set up unattended-upgrades pretty easily by typing this in a terminal:

sudo apt-get install unattended-upgrades
sudo dpkg-reconfigure unattended-upgrades

From the description:

 This package can download and install security upgrades automatically
 and unattended, taking care to only install packages from the
 configured APT source, and checking for dpkg prompts about
 configuration file changes.

Answer 3

In the Update Manager click the Settings button. This dialog will show up:

Select the "Install security updates without confirmation". This will automatically install security updates. If you want to set this up for them remotely via, you can do this:

sudo apt-get install unattended-upgrades

If the package is installed already you can do:

sudo dpkg-reconfigure unattended-upgrades

to change it's behavior. Follow the prompts to enable the feature once you run the command. There's currently no graphical method to just set the entire system to update unattended for everything (you want to play it safe when it comes to automatic upgrades), but setting security updates automatically is a good idea.

Check out the pages for more information if you want to automate getting -updates and -backports:

• https://help.ubuntu.com/community/AutomaticSecurityUpdates#Using_the_.22unattended-upgrades.22_package
• How to enable silent automatic updates for any repository?
• How do I enable automatic updates of all packages?

Answer 4

Go to terminal, and enter:

sudo dpkg-reconfigure unattended-upgrades

Say "yes" to the prompt. You'll still be notified about "normal" updates, such as those that contain bugfixes, but security updates will be installed automatically.

Answer 5

I use apticron to get informed by mail if an update needs to be done.

In your case, I would use "cron-apt" or "unattended-upgrades" to do the job of automagically updating your machines.