Re: Good luck to "vi" something - if you're not used to it
If you're not on a system with pkg_add, yes, you'll get that error.
If, however, you're following the steps in the article, and using OpenBSD, then that's exactly the command to install nano, and you can do that right at the beginning before you need to edit any config files. Then, throughout, instead of "vi main.cf" or whatever, type "nano main.cf"