Program to execute shell commands.

This is a discussion on Program to execute shell commands. within the C++ Programming forums, part of the General Programming Boards category; How do i make my program execute shell commands again. Like i dunno, for instance, ping www.google.com so that it ...

  1. #1
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    Program to execute shell commands.

    How do i make my program execute shell commands again. Like i dunno, for instance,

    ping www.google.com

    so that it would ping google. Isnt there some way for a prog to pass commands to the shell? I dont want a batch file im not pinging google its just an example.

  2. #2
    Inverse Tangent Studios
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    i've used the system(char*) function before...

    Code:
    #include <process.h>
    
    int main(int argc, char* argv[])
    {
    	system("ping www.google.com");
    	return 0;
    }
    that's one way to do it, i'm sure there are others. if this is a console application, system() will print out the output from the command you executed in your program's output.

  3. #3
    End Of Line Hammer's Avatar
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    When all else fails, read the instructions.
    If you're posting code, use code tags: [code] /* insert code here */ [/code]

  4. #4
    Registered User Finchie_88's Avatar
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    Is there a way which you can make the computer yuour ping varable, this was an idea, but the code doesn't quite work, so if any1 can c y, then tell me...

    Code:
    #include <iostream>
    #include <stdlib.h>
    #include <process.h>
    #include <string>
    
    using namespace std;
    
    string computer;
    
    int main(int argc, char *argv[])
    {
      cout << "Please enter the name of the computer that you want to ping..." << endl;
      cin >> computer;
      system("ping " computer);
      system("PAUSE");
      return 0;
    }

  5. #5
    Registered User
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    Quote Originally Posted by Finchie_88
    Is there a way which you can make the computer yuour ping varable, this was an idea, but the code doesn't quite work, so if any1 can c y, then tell me...

    Code:
      system("ping " computer);

    The system() command requires one argument that is [b]char *[/c].

    Here's an example built from yours

    Code:
    #include <iostream>
    #include <string>
    #include <cstdlib>
    
    using namespace std;
    
    
    int main(int argc, char *argv[])
    {
      string command;
      
      cout << "Please enter the name of the computer that you want to ping..." 
           << endl;
    
      cin  >> command;
    
      command = "ping " + command;
    
      cout << "Executing \"" <<  command << "\"" << endl;
    
      system(command.c_str());
    
      system("PAUSE");
      return 0;
    }
    Dave

  6. #6
    Registered User Finchie_88's Avatar
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    Now thats interesting, I didn't think to do it like that, and the best thing is that it works...

  7. #7
    Registered User
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    Quote Originally Posted by Finchie_88
    Now thats interesting, I didn't think to do it like that, and the best thing is that it works...
    That's funny; I thought I got the idea from you. You just didn't make a complete string for the entire command including arguments.

    Regards,

    Dave

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