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Some APT packages upgrade without asking any questions, e.g. if no configuration files are changed. Others don't.

I would like to check if a package needs or "wants" interaction on upgrade.

I do not mean forced, non-interactive installs/upgrades like https://serverfault.com/a/227194/174041. I would simply like to automate "safe" upgrades (I have unattended security upgrades anyway, but would like to also automatically upgrade packages that can be relatively safely upgraded in automated manner).

LetMeSOThat4U
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1 Answers1

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If you use 

apt-cache show postifx

you will see it depends on debconf which is commonly used to ask questions during package setup. And this shows:

apt-cache show debconf
...
Description-en: ...Packages use Debconf to ask questions when they are installed.
...
Snooops
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