Systems Administration (BSD)
www.educba.com
I'm sharing this link here because I did not know much about BSD, except a few odd facts. For example, the PlayStation 4's OS is based upon FreeBSD. ---- Something I learned from the article: Operating systems needs kernels. Linux is a kernel, which is why there are many operating systems for it. (Red Hat, Debian, Arch, etc) I don't know why I was confused about that considering I recently was at school for it, I somehow thought of operating systems and kernels as being interchangeable for some reason. Also, macOS is apparently based off of BSD as well, which I did not know either.