Set up Automatic Updates in Debian/Ubuntu

Lumenyx

Feb 13, 2026

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We’ll go over how to set up unattended upgrades in Debian/Ubuntu.

Install unattended-upgrades:

sudo apt install unattended-upgrades -y

Set up unattended-upgrades:

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

• dpkg-reconfigure — Reconfigure an already installed package.
• --priority — Specifies the minimum priority setup question to show.
• low — Show all options (as opposed to ‘high’ which shows much fewer). ‘Show me all options that have a priority of low, medium and high.’

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The log file can be found here:

sudo cat  /var/log/unattended-upgrades/unattended-upgrades.log