To get the most out of this book
We used Ubuntu 20.04 LTS and CentOS 8 throughout the book, and we advise you do the same. We also expect most of the command-line examples and code to work with newer versions of Ubuntu following the publication of this book. With CentOS 8 reaching the end of support in December 2021, you can still use Fedora or CentOS Stream as highly similar distributions. You may also try the RHEL distribution available for free with a Red Hat developer account.
If you are using the digital version of this book, we advise you to type the code yourself or access the code via the GitHub repository (link available in the next section). Doing so will help you avoid any potential errors related to the copying and pasting of code.