@Zzyzx BSDs are in some regards very retro. I have been very mad a good bunch of times about the lack of a declarative services supervisor along the lines of systemd, and people often said to me in return that they want to stick with their shell scripts for various reasons. Some aspects of the kernels are quite fancy, at least. Can't speak for NetBSD though. The system upgrade process in FreeBSD is quite bizarre and confusing, the base system separate from packages, but that is being worked on.