Linux is an open-source, Unix-like operating system kernel that serves as the foundation for various distributions such as Ubuntu, CentOS, and Arch Linux. It follows the monolithic kernel design but supports loadable kernel modules, allowing for hardware drivers and filesystem extensions to be added without rebooting.
How it works
The kernel acts as an intermediary between hardware and software, managing CPU scheduling, memory allocation, and I/O operations. Users typically interact with the system via a command-line interface (CLI) using shells like bash or zsh, or through graphical desktop environments.
It is widely used in enterprise servers, cloud infrastructure, and embedded devices. Linux is the primary platform for web servers (Nginx, Apache) and database management systems, providing high uptime and scalability for high-load applications.
Fact: Linux powers 100% of the world's top 500 supercomputers and approximately 90% of all public cloud infrastructure. The project is maintained by a global community and the Linux Foundation, with thousands of contributors worldwide.