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When I try to install updates (via either Update Manager or apt-get upgrade) the usual apt upgrade process is stopped as it shows me some changelogs, for example:

enter image description here

Nothing will happen until I hit the q key, then it outputs:

apt-listchanges: Mailing root: apt-listchanges: changelogs for msg

(msg is my hostname)

and finishes installing the updates as usual. This doesn't happen when installing a new package, only when installing updates.

What is causing this? How can I fix it?

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1 Answer

up vote 10 down vote accepted

apt-listchanges is a package that does exactly what you describe:

apt-listchanges is a tool to show what has been changed in a new version of a package, as compared to the version currently installed on the system. It does this by extracting the relevant entries from the changelog file, and the NEWS files.

It can be run on several .deb archives at a time to get a list of all of the changes that would be effected by installing or upgrading a group of packages. It can be configured to do this automatically during upgrades using apt.

This package has probably been installed on your system. If you don't want this behaviour, remove the package or change the configuration.

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