Programmer Group

1, New user access [avoid using names such as sshd that conflict with service built-in accounts] In general, for the sake of system access security, the system administrator account will not be directly used for remote access. 2.1 creating users With administrator privileges, execute cmd, execute user addition instructions, and creat ...

1, Configuration item 1. New item 2. Add task name 3. Choose a free style 3.1. Add basic task information 3.2 source code management If you understand the purpose of corresponding source code management, you can choose to click the help icon in the screenshot, which has the basic information description of the corresponding l ...

chapter 1 system call 1.1 Process and memory int fork() Create a process, the parent process returns the pid of the child process, and the child process returns 0int wait(int *status) Status gets the status returned by the child process exit, and the return value of wait is the pid of the child process exit. If the process calling wait() has ...

Network Configuration for Linux Linux Gets Network Configuration Automatically It is easy to get the network configuration automatically, but each time you start Linux, the ip addresses may be assigned differently. All of them, getting the network configuration automatically is not suitable as a server The first step is to configure a f ...

  This article is reproduced from: Qt::QWidget has no default title bar border. How to modify the size - childe Kaiming - blog Garden Development environment: win10+vs2015+qt5.9.1 Background: in the development process, the title bar and border provided by the system are rarely used; They often customize a scheme designed by themselves. ...

Shell language This problem uses command line + bat (windows batch file) to realize query. There are two main methods. The first is to use dir command and find command to count the number of various types of files in a specific directory; The second is to use the for statement to traverse and count the files in a specific directory, as follows: ...

Installing ROS noedic under Windows 1. System requirements ROS for Windows requires 64 bit Windows 10 Desktop or Windows 10 IoT Enterprise. Make sure you have installed Powershell and are in the system path. Exclude c:\opt (and subsequent workspace folders) from the real-time virus scanner because they interfere with installation and devel ...

1 Overview In my last article, we learned how to quickly build various development environments through Scoop and WSL, but did you find that the default powershell is ugly and difficult to use. Today, I teach you how to install and beautify Windows Terminal. Windows Terminal is an ideal matching for WSL2. It is fast, configurable and beautiful ...

Starting from this article, the author's journey of audio and video programming is about to enter the second stage. On the basis of collecting the playable files such as desktop, microphone and speaker written as mp4|mkv, the acquisition of camera is added. The camera can replace the desktop as the video input source, or the two video streams o ...

Question: 1. What is the socket communication mechanism? The official explanation is: The most commonly used scheme in network programming is the client / server model. In this scenario, the client application requests services from the server program. A service program usually listens for requests for services at a well-known address, that is, ...