In chapter 29, on the page about Podman, the following command is listed:
sudo add apt-repository ppa:projectatomic/ppa
I am not aware of any "add" command. Is this a typo?
I think it should be add-apt-repository. For that the package add-apt-repository package should be installed. See (for instance) https://linuxize.com/post/how-to-add-apt-repository-in-ubuntu/#installing-add-apt-repository-add-apt-repository-command-not-found-
You are definitely right it should be apt-add-repository ! We will fix that. I believe the link in the text is no longer accurate and we will have to adjust that too. I suspect we got the typo from there
Thank you @robbni and @coop for clarifying!