Where does Mac OS X come from?
Discussing with Mac owners, I got several versions of where Mac OS X comes from. It is known to have some root in BSD, but how much, and where?
bsd
What are the main differences between BSD and GNU/Linux userland?
I’ve read a lot on Unix & Linux about BSDs and GNU, etc. But I still don’t understand what some actual, practical differences are between BSD and GNU userlands, despite the fact that they are often mentioned. Can someone elaborate?
What do different BSDs have in common?
… and what are the differences between them? I formulated my question like this to make it clear I’m not interested in a flamewar of opinions, rather in an objective comparison between the different flavors of BSD Unix. Ideally I could get feedback from users who have experience in all of them.
If I connect a physical device, how can I ever know which device file belongs to it?
Say I plug in several USB drives which don’t get automatically mounted. How can I find out which device file belongs to which physical device, so I can mount it for example?
What is the difference between Unix, Linux, BSD and GNU?
GNU is an operating system that is free software—that is, it respects
users’ freedom.
Conceptual difference between Linux and (Free)BSD Kernel
(I’ve already noticed that this question was asked before but I think it has not been answered in a way I’d like to understand the topic.)
What are the differences between bsdtar and GNU tar?
I’ve always used GNU tar. However, all GNU/Linux distributions that I’ve seen ship bsdtar in their repositories. I’ve even seen it installed by default in some, IIRC. I know for sure that Arch GNU/Linux requires it as a part of basedevel (maybe base, but I’m not sure), as I’ve seen it in PKGBUILDs.