What's Python's os.system() equivalent to cocoa/Objective-C?

I'd like to run some terminal command within my Mac program. For example, I normally use mate abc.txt or python abc.py from my shell to open Text Mate or running python script.

How can I do the same thing with Cocoa/Objective-C?

I thought about this method, but I prefer just running in one line.

For example, when users enter "python abc.py", I just run the command as if it's in the Terminal.app. Python's equivalent command is os.system().

<-- inputItem TextField

NSString* item = [inputItem stringValue];
[NSRuncommandLikeShell item]; <-- ????

The enviro开发者_Python百科nment variables should be retained so that I don't need to run '/usr/bin/python'.

EDIT

I can use ~/.MacOSX/environment.plist file for setup path environment. Or, I also could use this utility for GUI.

---

You can use an NSTask object. If you don't like all of the setup that goes in to this, you can create an NSTask category that does it for you.

---

You can use the C runtime system() call.

#include <stdlib.h>

system([item UTF8String]);