Debian Linux is a free and open-source operating system based on the Linux kernel. It is one of the oldest and most popular distributions of Linux. Debian is known for its stability, reliability, and security. It follows the philosophy of providing a completely free and community-driven operating system.

Debian uses the Debian package management system, which allows users to easily install, upgrade, and remove software packages. It supports a wide range of software packages and has a vast repository of software applications available for installation.

Debian is available in different editions, including a stable version for production use, testing version for users who want newer packages, and a rolling release version for bleeding-edge software updates. It supports various desktop environments such as GNOME, KDE, XFCE, and LXDE.

One of the notable features of Debian is its commitment to free software. It adheres to the Debian Free Software Guidelines, which promote the use and development of free and open-source software exclusively. This commitment is reflected in its strict licensing policies and the availability of only free software in its main repository.

Debian is widely used in both server and desktop environments. It is popular among developers, system administrators, and enthusiasts who prefer a stable and versatile Linux distribution. It has a large and active community that provides support, documentation, and regular updates to ensure the smooth functioning of the operating system.