Although keeping a system tidy is not an exam objective, it’s a nice skill to have.
Three tutorials can help you to progress in this domain:
- How to keep your system clean: this tutorial teaches you how to better manage regular package additions and removals,
- How to set the number of old kernels kept: this tutorial shows you how to restrict the number of kernels to keep in your system,
- How to configure automatic updates: this tutorial explains how to automate package updates according to your needs.
Through these various pages you will learn that yum is your friend.