I have inherited 15 servers running Ubuntu 16.04 and need to install security updates on them all.
I have been told by my manager to install them one at a time and then test the system to make sure nothing has broken before installing the next one. I know this is a slow process but we have had problems with updates in the past so this is a belt and braces approach.
I know that I can do the whole lot in one go with the commands sudo apt-get update and then sudo apt-get upgrade.
Is there a way that i can install only one upgrade at at time?