Programming VIP

Server environment requirements NignxPHP 7.1 ~ 7.3 (Standard Version v4.4 and later versions are compatible with 7.4)MySQL 5.7RedisSupervisor Manager It is recommended to use bt pagoda panel, which is simple and easy to use. Alibaba cloud ecs or Tencent cvm cloud servers are recommended. Add 8 ports: 80,21888884433306637920002 / 20100 Authoriz ...

I Format of shell script file shell script file generally consists of three parts: interpreter, command code and comments. [root@server ~]# cat test #!/bin/bash <<notes Here are multiline comments notes echo 'hello world' # Here is a single line comment echo valar morghulis [root@server ~]# sh test hello world valar morghulis The fi ...

1. ls command It is the abbreviation of list. Through ls command, you can not only view the files contained in the linux folder, but also view the file permissions (including directory, folder and file permissions) View directory information, etc. ls -a List all files in the directory, including.Start hidden file ls -A List Division.an ...

Apache server Overview - Installation Apache server Overview - Installation WEB server, also known as WWW(WORLD WIDE WEB) server, is mainly used to provide online information browsing Service. Common web servers: httpd(Apache),nginx+PHP Tomcat: jsp + html win:IIS Client: IE, firefox, chrome, mobile (Browser) Browser Today's protagonist: L ...

1, Overview lwIP - A Lightweight TCP/IP stack The focus of the lwIP TCP/IP implementation is to reduce resource usage while still having a full scale TCP. This makes lwIP suitable for use in embedded systems with tens of kilobytes of free RAM and room for around 40 kilobytes of code ROM. Main features include: Protocols: IP, IPv6, ICMP, ND, ML ...

catalogue 1, Operation mode of QEMU 2, QEMU executes programs in user mode 3, System mode usage of QEMU 1, Operation mode of QEMU He directly excerpted his "uncover home router 0day vulnerability mining technology", checked it online and found no satisfactory QEMU instructions, so he adopted the introduction in this book. If you ...

Condition variables are used to synchronize threads. How to synchronize? Let's look down Conditional variable correlation function #include <pthread.h> int pthread_cond_init(pthread_cond_t* cond, const pthread_condattr_t* condattr); //Initialize condition variable int pthread_cond_destroy(pthread_cond_t* cond); //Destroy condition var ...

load balancing The English name of Load Balance is Load Balance, which means that the load (work task) is balanced and distributed to multiple operating units for operation. In the distributed architecture, there must be multiple copies of a service background. At this time, the load balancing component is required to allocate the traffi ...

1. Process 1.1 ps command There are many options for this command, so let's pick some common combinations to record. 1.1.1 ps aux List processes executing in the system [root@localhost sbin]# ps aux USER PID %CPU %MEM VSZ RSS TTY STAT START TIME COMMAND root 2 0.0 0.0 0 0 ? S 01:09 0:00 [k ...

1, Optimization direction 1. Five resources + kernel at host level 2. At the service level, find the core function of the service in the architecture → core optimization 3. Code, business level → assistance / assistance direction 4. Docking (tomcat connector nginx → php → fpm module fastCGI 9000) 2, Hardware optimizati ...