execute-shell.h

// Copyright (c) 2013 Elements of Programming Interviews. All rights reserved.

#ifndef SOLUTIONS_EXECUTE_SHELL_H_
#define SOLUTIONS_EXECUTE_SHELL_H_

#include <cstdio>
#include <iostream>
#include <string>

using std::string;

string execute_shell(const string &cmd) {
  FILE* pipe = popen(cmd.c_str(), "r");
  if (!pipe) {
    return "ERROR";
  }
  char buffer[128];
  string result;
  while (!feof(pipe)) {
    if (!fgets(buffer, 128, pipe)) {
      result += buffer;
    }
  }
  pclose(pipe);
  return result;
}
#endif  // SOLUTIONS_EXECUTE_SHELL_H_