Specify update with apt-get upgrade?

In Ubuntu, the most convenient way to get a system up to date is to call apt-get update followed by apt-get upgrade. However, on a system that is part of a production environment, it is common practice to test the updates first on an offline system and then apply the very same updates that have been tested on the production system. I wonder if this is possible with apt-get upgrade - is there a way to specify the upgrade in more detail, e.g. by specifying a date until when the upgrade is to be performed?

Solution 1:

Once you have tested the upgrades, you can manually upgrade only those specific packages you have tested on the production server with:

apt-get install somepackage=someversion