Why am I seeing this message about 'esm-apps' on just one system?

[Jeffrey Walton]

On Thu, Mar 16, 2023 at 5:37 AM Chris Green <cl at isbd.net> wrote:
>
> I have several systems running [x]ubuntu and I update/upgrade them
> manually every week or so.
>
> On just one of these systems I'm seeing the following when I run 'apt
> upgrade' :-
>
>     root at esprimo# apt upgrade
>     Reading package lists... Done
>     Building dependency tree... Done
>     Reading state information... Done
>     Calculating upgrade... Done
>     Get more security updates through Ubuntu Pro with 'esm-apps' enabled:
>       libimage-magick-perl imagemagick libavdevice58 imagemagick-doc ffmpeg
>       libopenexr25 imagemagick-6-doc libpostproc55 libmagickcore-6.q16-6-extra
>       libavcodec58 libimage-magick-q16-perl libmagickwand-6.q16-6 libavutil56
>       imagemagick-6.q16 libswscale5 libmagickcore-6.q16-6 libswresample3
>       imagemagick-6-common libavformat58 libavfilter7
>     Learn more about Ubuntu Pro at https://ubuntu.com/pro
>     The following packages have been kept back:
>       apparmor grub-efi-amd64-bin grub-efi-amd64-signed libapparmor1 shim-signed
>     0 to upgrade, 0 to newly install, 0 to remove and 5 not to upgrade.
>     root at esprimo#

What, exactly, is your complaint?

All this snippet shows is Apt works.

> Have I inadvertently enabled/selected something on that one system
> that makes this happen? ... or what?

Possibly.

Jeff