用C/C++代码检测ip能否ping通(配合awk和system可以做到批量检测)

#include <iostream>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
using namespace std;
string getCmdResult(const string &strCmd) // 这个是获取命令执行的结果， 类似于system, 之前我已经说过了
{ 
  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(int argc, char *argv[])
{
 if(argc != 2)
 {
 cout << "no" << endl;
 return -1;
 }
 string strCmd = "ping " + string(argv[1]) + " -w 1";
 string strRe = getCmdResult(strCmd);
 if(strRe.find("received") != string::npos && strRe.find(", 0 received") == string::npos)
 {
 cout << "ipok:" + string(argv[1]) << endl;
 }
 else
 {
 cout << argv[1] << endl;
 }
 return 0;
}

ubuntu@VM-0-13-ubuntu:~$ ./a.out 
no
ubuntu@VM-0-13-ubuntu:~$ ./a.out 1.1.1.1
1.1.1.1
ubuntu@VM-0-13-ubuntu:~$ ./a.out 172.16.0.13
ipok:172.16.0.13
ubuntu@VM-0-13-ubuntu:~$ ./a.out www.baidu.com
ipok:www.baidu.com
ubuntu@VM-0-13-ubuntu:~$ 

#include <iostream>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <fstream>
#include <string>
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; 
} 
string ipCheck(const string &ip)
{
 string strCmd = "ping " + ip + " -w 1";
 string strRe = getCmdResult(strCmd);
 if((strRe.find("received") != string::npos && strRe.find(", 0 received") == string::npos))
 {
 return "ipok:" + string(ip);
 }
 else
 {
 return ip;
 }
}
int main(int argc, char *argv[])  // ./a.out a.txt b.txt
{
 if(argc != 3)
 {
 cout << "error" << endl;
 return -1;
 }
 string strCmd = "rm -rf " + string(argv[2]);
 system(strCmd.c_str());
 strCmd = "wc -l " + string(argv[1]) + "| awk '{print $1}'"; // 获取文件行数
 string strNumLine = getCmdResult(strCmd);
 ifstream in(argv[1]);
 string filename;
 string line;
 unsigned int i = 0;
 if(in) // 有该文件
 {
 while (getline (in, line)) // line中不包括每行的换行符
 {
  // 这里最好做ip格式判断
  string strResult = ipCheck(line);
  strCmd = "echo " + strResult + " >> " + string(argv[2]) ;
  cout << strCmd << endl;
  system(strCmd.c_str());
 }
 }
 else // 没有该文件
 {
 cout <<"no such file" << endl;
 }
 return 0;
}