Ubuntu unattended security upgrades

I just did a do-release-upgrade of the OS from Ubuntu 14.04 to Ubuntu 16.04 (instructions).
Seems to have gone well.
Per the Discourse installation instructions I then performed dpkg-reconfigure -plow unattended-upgrades so that security updates are applied automatically.
I got this -

Can I assume the command worked, and this warning requires no action?

I also have this message when I do an apt-get update:

So it seems it is a backup file, since a new 50unattended-upgrades is present.
A diff of them shows

That is to say, the Ubuntu 14 version had
as well as
which is in the old and the new file.

So I deleted the backup/old file for now.


I’ve seen these before and updates have been running fine – so hang on and wish for the best :slight_smile:

If anything goes wrong, run sudo unattended-upgrade --debug --dry-run to watch what unattended-upgrade is thinking :wink: