The UNIX Operating System: A Foundation of Computing
UNIX... now that's an operating system with a story! It's a family of operating systems that can handle multiple tasks and users at the same time. It all started with the original AT&T UNIX, created in the 1970s at Bell Labs by some seriously talented people. Ken Thompson, Dennis Ritchie... true pioneers!
UNIX was really ahead of its time, introducing a hierarchical file system (like folders within folders), a command-line interpreter (where you type commands), and the idea of treating hardware devices like files. It was a whole new way of thinking about computing.
And the influence it's had! UNIX has been super influential, serving as the foundation for tons of modern operating systems, including Linux and macOS. You're probably using something based on UNIX right now, without even realizing it!