Automatically select yes in "dpkg-reconfigure unattended-upgrades"

Question

How can I avoid the dialog when I run dpkg-reconfigure unattended-upgrades? I want to select Yes automatically.

Answer 1

That’s a low-priority question, so you can skip it by specifying medium or higher:

dpkg-reconfigure -pmedium unattended-upgrades

The default answer is the current value of APT::Periodic::Unattended-Upgrade in /etc/apt/apt.conf.d/20auto-upgrades, and if that isn’t set, “Yes”.

Answer 2

sudo EDITOR='sed -Ei "
    s|unattended-upgrades/enable_auto_updates=.+|unattended-upgrades/enable_auto_updates=\"no\"|
    "' dpkg-reconfigure -f editor unattended-upgrades

Related answer: How do you set a locale non-interactively on Debian/Ubuntu?