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Is there any tutorials or references, if such thing is possible, to make GUI applications out of command line apps?
What I mean is, having a command line app, wrap it into an app bundle and create a Cocoa GUI app that would have a simple interface to execute the command line app with its flags and parameters.
As a matter of fact there are. Here is the first hit for a Google search:
What you’re looking for is the
NSTaskclass. Check out the documentation for all the information you need.