Linux is a free and open-source operating system that was first released in 1991 by Linus Torvalds. It is based on the Unix operating system and is widely used in servers, supercomputers, and embedded devices such as smartphones, smart TVs, and routers.
One of the key features of Linux is its modularity, which means that users can customize the operating system to their specific needs. Linux comes in many different “distributions” or “distros”, each with its own set of pre-installed software packages and user interface.
Linux is known for its stability, security, and speed, making it a popular choice for servers and other enterprise applications. It is also popular among developers, who use Linux for its powerful command-line interface and the wide range of programming tools available on the platform.
Some of the most popular Linux distributions include Ubuntu, Debian, Fedora, CentOS, and Arch Linux.