The sytem(); function

**alexnb185** · 03-20-2008

Does anyone know where I can find a manual page for the system(); function? I can't find one. Usually it is just a "man fgets()" google away, only in this case system. But I can't find anything on it.

**laserlight** · 03-20-2008

If you have access to a copy of the C standard, you can find it there.

You could also refer to online references like cppreference.com's system entry. Speaking of man though, I found this.

**alexnb185** · 03-20-2008

Well, thats weird because the 2nd link I actually went to that site and searched, I guess I just over looked it. Well, I still can't figure out the return value. Because eveytime I try to compile I get an error. Could someone paste a simple piece of code or help me out. I just need to figure out how to get the return value.

**laserlight** · 03-20-2008

Because eveytime I try to compile I get an error.

What error do you get?

**vart** · 03-20-2008

Code:

#include <stdlib.h>

int main ()
{ 
  int ret = system("1.bat");
  return 0;
}

**alexnb185** · 03-20-2008

Ah, you are a god. I feel like a total moron looking at that. But thank you very much.

**jhandu** · 03-21-2008

how about this???

for windows 9X:
system("C\\Windows\\Desktop\\filename.exe");

for windows NT:
system("C\\Winnt\\Desktop\\filename.exe");

for windows XP:
system("C\\Document and Settings\\Current User\\Desktop\\filename.exe");

for windows VISTA:
system("C\\Users\\Current User\\Desktop\\filename.exe");

**dwks** · 03-21-2008

And how are you going to determine which operating system the user is running?

And what about colons, like C:?

It should be noted that separate system() calls are independent of one another. Each system() call starts its own shell, which, in addition to being quite inefficient, means that calling system("cd whatever") will have no effect whatsoever on any system() calls following it.

The non-standard chdir() can be used to change the directory. I'm not sure what the Windows equivalent is.

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