Linux Kernel – Overview


The Linux kernel is the core of a Linux operating system. It is responsible for managing the system’s resources and for providing a interface for user-level applications to interact with the hardware. The kernel is a key component of the operating system and performs a wide range of tasks, including:

  • Memory management: The kernel manages the system’s memory and allocates it to different applications as needed.
  • Process management: The kernel manages the creation and termination of processes, as well as their execution and scheduling.
  • Device management: The kernel manages the system’s devices, such as printers, keyboards, and disks. It also handles input/output (I/O) operations and communicates with the hardware.
  • File system management: The kernel is responsible for managing the file system, including the creation and deletion of files and directories.
  • Networking: The kernel includes a network stack that handles network communication, including support for various protocols such as TCP/IP.

The Linux kernel is a monolithic kernel, which means that all of the core kernel functions run in a single address space and are not separated into different modules. This allows the kernel to be highly efficient, but it also means that the kernel must be carefully designed to avoid bugs and security vulnerabilities.

The Linux kernel is an open-source project, which means that the source code is freely available for anyone to view, modify, and distribute. This has allowed the kernel to be widely adopted and has contributed to its success as a platform for developing a wide range of applications.