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1, SpringBoot project environment IntelliJ IDEA 2018.3.2Mysql 5.1 2, Tencent cloud CentOS 7.6 image server Students can apply for Tencent cloud student exclusive, 27 yuan for three months 3, Attention (1) XShell Modify host namehostnamectl set-hostname master #Set to master name View current hostnamehostname After modifying the hos ...

1, Install java project Install jdk and tomcat. Please refer to the article Configuring multiple tomcat on one linux server 2, Installing nginx Please refer to the article Linux Installation nginx steps 3, Install nginx VTS export 1. Install git yum install git -y 2. Install nginx VTS export git clone https://gitee.com/mirrors/nginx-mo ...

This section mainly explains how to use Apollo in ordinary Java projects and Spring Boot. Used in ordinary Java projects Add Maven dependency of Apollo Client. The code is as follows. <dependency> <groupId>com.ctrip.framework.apollo</groupId> <artifactId>apollo-client</artifactId> <version&gt ...

Connection reference: https://access.redhat.com/documentation/zh-cn/red_hat_enterprise_linux/7/html/logical_volume_manager_administration/dmsetuphttps://man7.org/linux/man-pages/man8/dmsetup.8.html 1. Introduction The dmsetup command is a command line wrapper used to communicate with Device Mapper. You can use the info, ls, status, and ...

1,Understand the usage of standard c library fopen (click to jump) 2. fputc writes a character to the file #include <stdio.h> int main() { FILE *fp; fp = fopen("./test.txt","w+"); //int fputc(int c, FILE *stream); fputc('a',fp); fclose(fp); return 0; } 3. fputc writes a string to a ...

1, To create an anonymous pipe: #include <unistd.h> int pipe(int pipefd[2]); Function: create an anonymous pipeline for inter process communication; Parameter: int pipefd[2] this array is an outgoing parameter; pipefd[0] corresponds to the reading end of the pipeline; pipefd[1] corresponds to the write end of the pipeline; Return va ...

In 2018, due to the development of a large water conservancy Province Hydrological data website After the revision, the hydrological data of the province are changed into small pictures with a height of 13px. For example, the three pictures below represent the station name, upstream water level and downstream water level respectively: After d ...

catalogue 1. Write an integer to the file 2. Write a structure to the file 3. Write structure array to file 4. Write linked list to file 5. Summary 1. Write an integer to the file First create an empty file: file Then the code starts #include <sys/types.h> #include <sys/stat.h> #include <fcntl.h> #include <stdio.h ...

premise Process multiple business modules at the same time. Multiple business modules may need to transfer data to each other or need synchronous control. Two entities need to communicate with each other and must have resources that can be shared. Files on disk: -- > IO processing is slow and out of sync. Application scenario of process co ...

Under linux system, ordinary users cannot directly execute the commands under the authority of root user. If you want ordinary users to execute the operation commands that only root user can execute, sudo is needed. Before sudo was written around 1980, the general way of user management system was to use su to switch to super user. Ho ...