Contents
Architecture of LINUX :–
1.Kernel
2.Shell
3.System Utilities
4.User Application
5.Hardware Platform
1.Kernel :–
It act as an interface b/w Operating System & other hardware resources. it is the main part of operating system that load first & remains in the main memory.
2.Shell :–
It act as an interface b/w user & operating system . it is a software that provides an interface for user of an operating system which needs service of a kernel.
3. System Utilities :–
It consists of various system interrupts & system calls which are to transfer the control for the kernel mode containing the kernel & Shell for further Execution of command .
The control can be transfer using system calls. “system call is an interface b/w a process & the operating system.
“In single words the system calls is request for running any program & for performing any operation one the system that the user has requested.
system calls are different types.
- File Management system calls :– its performing a operation Open, Close , Read , Write .
- Process Control system calls : — its performing a operation Load , Execute , Create.
- Management system calls :– its performing a operation Request device , Write Device , Release Device.
- Communication system calls :– Send message Transfer status operation.
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4. User Application :–
The Application which a user requires to perform its task.
5. Hardware Platform :–
The Resources of the system such as Keyboard , Monitor , Printer etc. with which user can input-output the request are supported by the Linux.
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