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Test Code #define _GNU_SOURCE #include<sched.h> #include<stdio.h> #include<stdlib.h> #include<unistd.h> #include<stdint.h> #include<sys/wait.h> #include<sys/types.h> typedef void (*spawn_proc_pt)(void*data); static void work_process_cycle(void*data);//Function of work static void start_processes ...

1, Variable 1. When defining a variable, the variable name does not add a dollar sign 2. Naming can only use English letters, numbers and underscores, and the first character cannot start with a number. 3. There can be no space in the middle, and underline () can be used.   4. Punctuation cannot be used.     & ...

1.1 introduction to Linux Unix is a powerful multi-user and multi task operating system developed in Bell Labs of at & T in 1969. The trademark right of UNIX is owned by The Open Group. UNIX operating system is commercial and charged, and the price is a little more expensive than Microsoft Windows. Linux is a UNIX like operating system ...

Navigation for this series of articles:   Write C + + server by hand (0): column - Summary navigation [updating]  The default blocking mode is used when connect is created, but in reality, the connection speed may be slow due to poor network, intermediate proxy server, gateway and other factors. At this time, in blocking mode, the pr ...

1,Docker Docker is an open source application container engine, which is based on Go language and complies with Apache 2.0 protocol.Docker allows developers to package their applications and dependent packages into a lightweight and portable container, and then publish them to any popular Linux On the machine, virtualization can also be real ...

Install SSHD Install sshd apt update && apt upgrade # Update Terminal Package apt install openssh Start sshd sshd Set sshd self-start echo "sshd" >> ~/.bashrc Set User Name Password Get the username, I have the username u0_a173 here whoami u0_a173 Set Password passwd Remote landing ssh -p 8022 u0_a173@192.168.1 ...

This article is published by the public account [development pigeon]! Welcome to pay attention!!! Old rules - sister town building: 1. Production of win7 system qcow2 format image (1) Overview         For image acquisition in qcow2 format, you can directly download the corresponding system image from the netw ...

1 problem phenomenon When IPV6 is enabled, the NetworkManager service will listen to all 0 addresses by default. Here 58 is not a port, but a protocol number, indicating icmpv6. The phenomenon is as follows: # netstat -anp | grep Network raw6 0 0 :::58 :::* 7 2581242/NetworkMana 2 cause analysis 2.1 raw6 what is it? raw6 is the RAW SOCKET ...

The first step is to open the terminal, type the following code, and automatically open the download source text editor sudo gedit /etc/apt/sources.list Replace the download source, and replace all the download sources with the following sources of China University of science and technology deb http://mirrors.ustc.edu.cn/ubuntu/ xenial main ...

CentOS 7 RPM installs Elasticsearch 7.14.1 and common plug-ins Installing JDK 1.8 Install jdk: Open the official website to download: https://www.oracle.com/java/technologies/javase/javase-jdk8-downloads.htmlDownload the Linux x64 RPM Package: jdk-8u301-linux-x64.rpmInput password, 2696671285@qq.com /Oracle123 (if it fails, you can search th ...