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 noubuntu@VM-0-13-ubuntu:~$ ./a.out 1.1.1.11.1.1.1ubuntu@VM-0-13-ubuntu:~$ ./a.out 172.16.0.13ipok:172.16.0.13ubuntu@VM-0-13-ubuntu:~$ ./a.out www.baidu.comipok:www.baidu.comubuntu@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;}