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Little understanding of Unix System Structure

UnixLittle understanding of architecture

It can be defined as a software operating system in the strict sense,The software controls the computer hardware resources,Provider operating environment for personal understanding of hardware and software wealthy。We call such software kernel (kernel),It is relatively small,Located in the center of the environment

Kernel system call interface is called (system calls) Shared libraries built on top of the system call interface,Applications can either use the shared library,You can also use the system call。

ShellIt is a special application,It provides an interface to other applications。

In a broad sense it includes the operating system kernel and other software,These computer software are able to play a role,And unique features give computer,The software includes system utilities,application,shellAnd public libraries。

In fact, on a personal understanding of the kernel is a library,Convenient program calls,And hardware-oriented。

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