I’m learning Ubuntu 18.04.1 LTS from the 2019 edition of Ubuntu Unleashed. It says to use the vimtutor command to learn vi’s keyboard commands. When I try “vimtutor” in the terminal it gives an error message and instructs to load vim runtime. When I do I get a blank page with “/tmp/tutorLwA9PB” at the bottom. How do I get to the tutorial? Stephen