How Update-Alternatives Manages Multiple Versions of Python, Node.js, and other Open Source Packages
After a friend installed Python 3.9 side-by-side with Python 3.6, he asked, “I noticed that the newer version, Python 3.9, became the default on my IBM i system. How did the default version get set?” We explained how IBM used the update-alternatives program to set the default version of Python and other open source software packages.