House rental and sales information system source code + database based on Vue and SpringBoot

House rental and sale information system Complete code download address: House rental and sales information system Software Introduction This software is a house rental and sale information system based on Vue and SpringBoot. It mainly includes three business lines: house rental, house sale, and house transaction. Developers can use this project Carry out secondary development […]

[Comprehensive explanation of Linux commands] 116.umount command: a practical tool for unloading a loaded file system

Article directory umount Additional information grammar Options parameter Example Learn `python` from scratch umount Used to unmount a mounted file system Supplementary instructions The umount command is used to unmount a mounted file system. You can umount the file system using the device name or mount point, but it is best to unmount it through […]

[Comprehensive explanation of Linux commands] 124.e2fsck: Tool for checking and repairing the second extended file system

Article directory e2fsck grammar Options parameter Example Learn `python` from scratch e2fsck e2fsck is used to check the integrity of the second extended file system and try to fix errors with the appropriate options. The returned value after execution and its representative meaning are as follows: 0 No errors occurred. 1 A file system error […]

Based on Java: Design and implementation of stray animal adoption information system (source code + lw + deployment documents + explanation, etc.)

Blogger Introduction: ?300,000+ fans across the entire network, csdn guest author, blog expert, CSDN Rising Star Program mentor, high-quality creator in the Java field, Blog Star, Nuggets / Huawei Cloud / Alibaba Cloud / InfoQ and other platforms are high-quality authors, focusing on the field of Java technology and practical graduation projects? Contact for source […]

Using g++ and Makefile to compile C language programs based on Linux (Ubuntu) system

Using g++ and Makefile to compile C language programs based on Linux (Ubuntu) system Preface 1. Install Ubuntu Introduction to Ubuntu Ubuntu installation steps After installation, enter the system 2. Compile using g++ Install g++ Write a program and compile and run it The difference between g++ and gcc Experimental case Experimental requirements experiment one […]

Java graduation project takeaway ordering system based on Spring boot+vue merchant-user-rider

Get resources at the end of the article, collect and follow them to avoid getting lost Article directory Project Introduction Technology Introduction Project interface key code Table of contents Project introduction With the rapid development of science and technology, all walks of life are striving to integrate with modern advanced technology and improve their own […]

System programming two: vfork+exec+process communication method pipe+signal

1. Analyze resource issues of parent-child processes from a memory perspective 1. Example 1 #include<stdio.h> #include <unistd.h> #include <stdlib.h> int main() { //The code of the original process int a = 100; printf(“main\\ “); \t //Create a child process pid_t id = fork(); if(id == -1)//Error { printf(“fork error\\ “); return -1; } else if(id […]

System Programming Three: Signal Processing + Signal Blocking Properties

1. Function interface about signals 1. How to send a signal to another process? (kill) Order kill – signal value ID number of the process killall – signal value process name function kill – send signal to a process //Send a signal to a process SYNOPSIS #include #include int kill(pid_t pid, int sig); parameter: pid: […]

DNS domain name resolution system

1. The role of DNS Domain Name System (DNS) is a service of the Internet. As a distributed database that maps domain names and IP addresses to each other, it can make people access the Internet more conveniently. DNS defines two types of messages, one is the query message; the other is the response to […]

GDB debugging system interface syscall (9)

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