Facts about Linux

Linux is a family of open-source Unix-like operating systems based on the Linux kernel.
Linux was first released on September 17, 1991, by Linus Torvalds.
Linux also runs on embedded systems, i.e. devices whose operating system is typically built into the firmware and is highly tailored to the system.
This includes routers, automation controls, smart home technology (like Google Nest), televisions (Samsung and LG Smart TVs use Tizen and WebOS, respectively), automobiles (for example, Tesla, Audi, Mercedes-Benz, Hyundai, and Toyota all rely on Linux), digital video recorders, video game consoles, and smartwatches.
The Falcon 9’s and the Dragon 2’s avionics use a customized version of Linux..