For years, Ubuntu has provided a patched version of `sudo` that preserves `$HOME` by default. Besides Ubuntu and its derivatives, very few other operating systems (perhaps no others) do this. It has been decided that this causes more problems than it solves, and starting in Ubuntu 19.10, `$HOME` is no longer one of the few environment variables `sudo` preserves.
In terms of *what* the change is and how it affects users, the key points are:
- **As of Ubuntu 19.10, <code>sudo *command*</code> does what <code>sudo -H *command*</code> does in previous releases.** It can indeed be used in case…