Shulou(Shulou.com)06/02 Report--

2.2 what is Linux?

Linux is also an operating system like the Windows we are familiar with, but unlike Windows, Linux is a set of open source program and Unix-like operating system software that can spread freely (Unix system is the predecessor of Linux system, with many excellent features). At the beginning of its design, it is based on Intel x86 series CPU architecture computers. It is a POSIX1-based multi-user, multi-tasking and multi-threaded and multi-CPU operating system.

Linux is designed and implemented by thousands of programmers around the world. The original purpose of developing Linux is to build Unix-like operating system compatible products that are not restricted by the copyright of commercial software and can be used freely all over the world. In the past 30 years, Linux system has been mainly used in server-side, embedded development and personal desktop systems.

Server-side applications: almost all of the top 10000 websites in China are Linux, and it is estimated that 99% of the top 10000 websites in the world (except Microsoft) are Linux. Large and super-large Internet enterprises we are familiar with (Baidu, Sina, Google, Facebook, Taobao, etc.) all use Linux as their server-side program operation platform, and almost all of the global and domestic top 10 websites use Linux system.

Linux is popular because it has the following characteristics:

L is an open source program software that can be modified freely

L is compatible with Unix system and has almost all the excellent features of Unix.

L is suitable for computers with X86 architecture such as Intel.

Noun parsing:

The full name of POSIX is Portable Operating System Interface, and the Chinese translation is portable operating system interface. POSIX standard defines the interface standard that the operating system should provide for applications.

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