types of operating system

Operating system summary, operating system knowledge points SummaryThe operating system is difficult. It's just that we think so when we see or hear others say it's hard. If you calm down and look at the books for two days, you wi

Operating system kernel (linux), operating system kernel linux Kernel of the Operating System) Is a group of programs that focus on managing all activities of the computer and all hardware in the drive

How the operating system works ———— a streamlined operating system kernel20135304 Liu XipengOriginal works reproduced please indicate the source"Linux kernel Analysis" MOOC course http://mooc.study.163.com/course/USTC-1000029000Experimental processOpen the shell with the lab virtual machine, load the Linux kernel neede

Add a root user for the ubuntu operating system and a root user for the ubuntu Operating System 1: After a virtual machine is installed and the Ubuntu operating system is installed, you can log on to the

Operating system experiment and code (full), operating system experiment code Operating System is an extremely important professional course for computer-related majors, but many people do not know how to write the code during the

Solve_fork1 () {while (lock==1) {} cnt++; printf ("%d has entered the critical section \ n", Getpid ()); lock = 1; } void Solve_fork2 () {while (lock = = 0) {} cnt++; printf ("%d has entered the critical section \ n", Getpid ()); lock = 0; } The above is achieved mutex access is not wrong, but also problematic, first of all, he was busy to solve the problem, and secondly, he can solve two of the process of competition. Peterson SolutionThe result of the solution

One, the simplest "operating system" The simplest "operating system" is the simplest boot sector (boot Sector). Although it does not have any functionality, it can run directly on bare metal without relying on other software. A boot sector is 512 bytes, and the sector is identified with 0xaa55 as the end. Here is the m

performance testing, we need to use the tools provided by the operating system to collect various types of resource monitoring data in the operating system, including CPU, memory, and hard disk usage data. If the tested program uses the network, you also need to collect net

The Windows 64-bit operating system provides compatibility with 32-bit applications and retains many 32-bit tools in the "C:\Windows\SysWOW64" directory (for example, CMD.exe is 32-bit). When running 32-bit applications on a Windows 64-bit operating system, operating the reg

Operating System-webpage storage management and operating system storage When talking about page-based storage management, I would like to talk about the user's program first, because page-based storage management serves the user's program or processes. After a program is compiled, it will definitely occupy space, that

Operating system notes (11) virtual memory, operating system virtual memory Virtual Memory Demand paging Page Replacement Algorithm FIFO first-in-first-out Optimal Replacement: the least used pages in the future. It is difficult to implement. LRU: least recently used. The above approxima

Linux operating system basics, linux operating system Basic Principles of Linux: 1. It is composed of a single small program with a single purpose; it is combined to complete complex tasks; 2. Everything is a file; 3. Avoid capturing user interfaces as much as possible; (Avoid interacting with users as much as possible

Operating system --- learning notes 0, operating system --- learning notes Note: This document follows the "Netease cloud classroom"-Harbin Institute of Technology-instructor Li Zhijun's Open Class course. I would like to thank Mr. Li for his busy schedule to provide excellent teaching resources for the majority of stu

1. Concepts of operating system virtual machines Running the operating system on bare metal is called an operating system virtual machine. 2 processor state: core State, tube state, user State, Mutual Difference Core State: the S

This section first introduced the breakthrough boot sector only 512 bytes of the principle, and then introduced the FAT12 file system, finally through the experiment Load loader and give control to loader to achieve break through 512 bytes of bondage.512-byte limit exceeded The boot sector used in the preceding section is only 512 bytes. However, there are actually a lot of things that the operating