Architecture

Linux System Architecture is consists of following layers

• Hardware layer - Hardware consists of all peripheral devices (RAM/ HDD/ CPU etc).
• Kernel - Core component of Operating System, interacts directly with hardware, provides low level services to upper layer components.
• Shell - An interface to kernel, hiding complexity of kernel's functions from users. Takes commands from user and executes kernel's functions.
• Utilities - Utility programs giving user most of the functionalities of an operating systems.