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‍ catalogue 1, What is a shell 2, Application scenario of shell script 3, Common shell scripts 4, Summary 1, What is a shell Shell is an application program, which connects users and Linux kernel, so that users can use Linux kernel more efficiently, safely and at low cost. This is the essence of shell. In short, we operate Linux through ...

Undertaking ZONE of linux Kernel Things , the physical memory of a node is managed by dividing it into zone s as needed, and each node is managed by pg_data_t Manage (refer to if you want to know) SPARSE(3) of the physical memory model for those things in the linux kernel For NUMA systems: Each node has its own local memory, so it has its ow ...

preface Recently, I chose the elective course of Linux kernel principle. Although the class is relatively short, the content involved can only cover a small part of Linux knowledge, the teacher's level is really high and the knowledge is very in-depth. The small assignment this time is to write C language program under Linux platform to realiz ...

1: Event loop pool class Event loop pool is a singleton class that manages EventPoller 1. EventPollerPool constructor EventPollerPool::EventPollerPool() { auto size = addPoller("event poller", s_pool_size, ThreadPool::PRIORITY_HIGHEST, true); InfoL << "establish EventPoller number:" << size; } 2: Adding EventPoller to ...

70% of this article is reprinted and 30% is supplemented. Original text: 2022 new and complete version of Qinglong panel docking robot, and silly girl docking onebot(oicq) protocol realizes robot function_ Dabei's Programming Notes blog - CSDN blog_ Qinglong panel qq robot Solve bash: /root/sillyGirl/sillyGirl: insufficient permissions and ws ...

Use of samba client Share windos to linux windows open sharing On windows, the sharing method is: right click file attribute [can also be shared, such as disk C] - sharing - Advanced sharing - open net share: open the command panel on windows to view the share ipconfig: open the command panel and check the local IP [this needs to be record ...

1. Disk Foundation 1. Data structure Sectors: The disk is divided into sectors, each containing 5 12 bytes of data Track: Concentric circles of the same disc with different radii Cylindrical surface: Cylindrical surface with the same radius of different discs 2. Physical Structure Disk: Hard disk has multiple disks, two sides each He ...

Agile development of microservices is not simpleThere are thousands of sets of safe environment, and the little brothers of Dabai development are laughingMicroservices bring us the characteristics of agile development. Based on the convenience of agile development, we can develop multiple iterations / features in parallel at the same time. Howe ...

Linux operating system learning 1, Linux system Linux system startup process Kernel boot: When the computer is powered on, the first is BIOS power on self-test, which starts according to the boot device (usually hard disk) set in BIOS. After the operating system takes over the hardware, first read the kernel file in the / boot director ...

SDN course design, using Ryu to control, gnawing on the source code is really tired Github source code here Project background At present, smart cities are developing more and more, but with the application of various network devices and sensors, the network burden of cities is also increasing. If data analysis and other operations are done ...