通过代码实现文件夹的创建以及文件的写入

 

　　password为sudo的密码

#include "include/rapidjson/stringbuffer.h"
#include "include/rapidjson/writer.h"
#include "include/rapidjson/document.h"
#include <iostream>
#include <string>
#include <eigen3/Eigen/Dense>
#include <vector>
#include <ctime>
#include <fstream>
#include <dirent.h>
#include <unistd.h>

// using namespace std;

int main()
{
    std::string datadir = "/home/test1/test1/ste1";
    if (access(datadir.c_str(), R_OK) == 0)
    {
        std::string  command1="echo password | sudo -S touch "+datadir+"/12345.json";
        int result1= system(command1.c_str());
        std::string command2="echo password | sudo -S chmod a+rwx "+datadir+"/12345.json";
        int value3=system(command2.c_str());
        std::ofstream outfile1;
        outfile1.open(datadir+"/12345.json");
        outfile1<<"helloworld"<<std::endl;
        outfile1.close();
        std::cout << "dir exsist" << std::endl;
    }
    else
    {
        std::string  command="echo password | sudo -S mkdir -p "+datadir;
        int result= system(command.c_str());
        std::string  command1="echo password | sudo -S touch "+datadir+"/123.json";
        int result1= system(command1.c_str());
    }

    return 0;
}