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PHP Extension Development Articles, I have updated to< TIPI> Before reading the following, let's assume that you are right. PHP 7 Basic Data Structure They all have a general understanding, which is the premise of reading the following content.We are divided into two parts:Firstly, it implements a custom file operation expansion of openin ...

Explain VSCode is an editor. By default, it does not have a compiler and debugging environment. It needs to install the compiler by itself. Debugging can be done with its plug-in. The compiler suite is based on TDM-GCC, which is easy to use. (Codeblocks, Dev-Cpp and other default bands are this one). Paths are automatically added to the environ ...

The ability to get help determines your technical ability. This blog article teaches you how to get help documents for commands, such as queries through help, man, and locally installed methods. Types of commands in linux Command types in linux are divided into internal commands and external commands. The type command determines whether a ...

Catalog: I. Preface II. Foundation Layer 2.1 Cache Module 2.1.1 Http Caching Protocol 2.1.2 Storage Design 2.1.3 Cache Summary 2.2 Log Record 2.2.1 Concept 2.2.2 Example 2.2.3 Detailed analysis 2.2.3.1 Log Switch 2.2.3.2 Format log information 2.3 exception module ...

How to install mysql database, let's not say here, just say its master-slave replication, the steps are as follows: 1. The master and slave servers perform the following operations: 1.1. Consistent Version 1.2. Initialize the table and start mysql in the background 1.3. Modify the password of root 2. Modify master server: #vi ...

Linux systems can view information such as CPU, memory, run time, swap partitions, thread of execution of the system through the top command.The top command is an effective way to find out what's wrong with your system.Not enough memory, not enough CPU processing power, too high IO reading and writing.... [root@foundation6 docker]# top top - ...

I. Bubble Sorting Thought: Repeat visits to the sequence to be sorted, compare two elements at a time, exchange them if their order is wrong, the smallest one comes up, followed by the second smallest. Time complexity: O(n^2) Spatial complexity: O(1) Stability: Stability 1. /**       * Bubble sort       * @param disOrderArray       * @ ...

Summary In this paper, through a brief analysis of init process source code, carding its processing process, focusing on how to start the application program init process, summed up the idea of writing the start script file. Source code analysis of init process The init process is the first process launched by the Linux kernel. How do you know? ...

8.1 shell introduction What is shell? The shell is a command interpreter that provides interaction between users and machines (command line terminals) A script shell is a manifestation The last section of passwd is the user's shell shell supports specific grammars, such as logical judgement, loops Each user can have his or her own specific ...

Little knowledge The expression conditions of shell script if can be viewed by man test, for example, - a is equivalent to &&. 2. Example 1: Simulated landing #!/bin/bash echo -n "login:" read name echo -n "password:" read passwd if [ $name = "wilcohuang" -a $passwd = "31415926yhwy." ]; then echo "the host and password is right" ...