linux使用c++调用脚本获取数据

脚本参考之前的文章，

代码如下：

#include 

using namespace std;

static inline std::string execute_command(const char *cmd)
{
    if (cmd == NULL)
    {
        return "";
    }

    FILE *fp = popen(cmd, "r");
    if (NULL == fp)
    {
        return "";
    }

    char buf[BUFSIZ] = {};
    int i;
    std::string result;
    while ((i = fread(buf, sizeof(char), BUFSIZ, fp)) > 0)
    {

        result.append(buf, i);
        memset(buf, 0, BUFSIZ);
        if (i != BUFSIZ)
        {
            break;
        }
    }
    pclose(fp);
    int index = result.find_last_of("rn");
    if (index > 0)
    {
        return result.substr(0, index);
    }
    index = result.find_last_of("n");
    if (index > 0)
    {
        return result.substr(0, index);
    }
    return result;
}

int main()
{
    string cmd = R"(bash proc_ex.sh)";
    string ret = execute_command(cmd.c_str());
    cout << ret << endl;

    return 0;

}