What is Linux?
The free, open-source operating system that runs most of the world's servers.
// Explanation
Linux is an operating system (like Windows or macOS) created in 1991 by Linus Torvalds and maintained by thousands of volunteers. It's free, open source, and brutally efficient. It's not very popular on personal desktops, but it dominates servers, smartphones (Android is Linux), and supercomputers. If you use the internet, you depend on Linux whether you know it or not.
// Example
Your bank, Netflix, Google, Amazon — they all run on Linux servers. The robot in your factory probably does too.