I don’t know how well it was a reflection of classic UNIX philosophy, that’s a whole argument on its own, but when I found and learned about various Suckless to

I don’t know how well it was a reflection of classic UNIX philosophy, that’s a whole argument on its own, but when I found and learned about various Suckless tools and similar minimalist things like runit, s6, and in particular an excellent article on doing Linux from scratch but setup with both but busybox so it booted strait to a busybox shell without any init system … collectively they opened my eyes to the fact that “Operating System” is a spectrum containing a lot of room for both varing degrees of hardware abstraction (DOS/RTOSes vs Windows/macOS/Linux/*BSD) and for the level of support the operating system provides the “user land” software on top of it. It’s been quite useful now I’m working on things like Linux and FreeRTOS on Satellites and how to utilise fault tolerant supervision frameworks to keep critical systems running.