Linux Cloud Computing architect growth path-Chapter 2 Linux Systems and Features-2.1operating system

2.1 operating system

If asked what the operating system is, many beginners may look at a loss. Although Windows XP, Windows 7, Windows 8, and Windows10, which we have been using all the time, are actually operating systems, there is no way to define the operating system or explain to the questioner what an operating system is.

Operating system, English name is Operating System, abbreviated to OS, is the essential basic system software in the computer system, it is the basic environment support that the application program runs and the user operates, is the core of the computer system.

The function of the operating system is to control and manage the hardware and software resources in the computer, for example, it is responsible for directly managing all kinds of hardware resources in the computer, such as CPU, memory, disk, etc., and at the same time managing the priority of supply and demand of system resources. The operating system can also control the input and output of the device, as well as operating the network and managing the file system and other transactions. At the same time, it is responsible for the management of all kinds of software resources in computer systems. For example, the installation and running environment settings of all kinds of software.

At present, the common operating systems on PC (Intel X86 series) computers are Windows and Linux.

Various operating systems represent pictures:

Ubuntu 18.04

CentOS