Linux Learning (ii) kernel, system call, library

This blog mainly introduces several common concepts in Linux

　　

　　kernal: Kernel : We know that the hardware of the computer includes: CPU, memory, external memory, etc.

The system needs to use the kernel to unify the resource allocation! The kernel is to abstract the hardware resources of the computer, to provide other software, can be understood as a platform.

The kernel provides a way to use it: system call

　　libraries: Because of the limited functionality of system calls, people encapsulate multiple system calls and provide more advanced functional interfaces for developers to invoke.

These feature interfaces are made up of libraries!

The library file cannot be executed separately and must be called to execute.

The library file type for the Windows system is: the library file in the. dll type (dynamic link library)/windows

and the library files in the Linux system are. So types (shared objects)

Linux Learning (ii) kernel, system call, library