如何获取system函数执行的结果? 搞了一下, 没搞定, 那就用别的方法搞起, 看代码:

#include <iostream>
#include <unistd.h>
#include <stdlib.h>
#include <stdio.h>
using namespace std;

string getCmdResult(const string &strCmd)
{
	char buf[10240] = {0};
	FILE *pf = NULL;
	
	if( (pf = popen(strCmd.c_str(), "r")) == NULL )
	{
		return "";
	}

	string strResult;
	while(fgets(buf, sizeof buf, pf))
	{
		strResult += buf;
	}
	
	pclose(pf);

	unsigned int iSize =  strResult.size();
	if(iSize > 0 && strResult[iSize - 1] == '\n')  // linux
	{
		strResult = strResult.substr(0, iSize - 1);
	}

	return strResult;
}

int main()
{
	cout << getCmdResult("date") << endl;
	cout << getCmdResult("echo -n abc | md5sum | awk '{print $1}'") << endl;
    return 0;
}
      结果:

Sat Nov  4 11:23:56 CST 2017
900150983cd24fb0d6963f7d28e17f72


     不多说。




本文转载:CSDN博客