Linux Architecture

 Linux Architecture

An operating system is an interface between the user and the computer hardware. A number of software applications run on the operating system to manage the hardware resources on a computer.

The Linux system basically works on 4 layers. See the below diagram, which shows the layers of the Linux system architecture.

• Hardware − Hardware consists of all physical devices attached to the System. For example Hard disk drive, RAM, Motherboard, CPU, etc.
• Kernel − Kernel is the core component for any (Linux) operating system which directly interacts with the hardware.
• Shell − Shell is the interface that takes input from Users and sends instructions to the Kernel, Also takes the output from Kernel and sends the result back to the output shell.
• Applications − These are the utility programs that run on Shell. This can be any application like Your web browser, media player, text editor, etc.