Batch iphone application creation

I have built an application that show you information based on te images and database that are included in the bundle of this application. I want to build a whole set of these applications only 开发者_如何学Cwith different images and databases, but I do not want to create an xcode project for each of these application. Because if I make a change in the application I will have to build all the apps again. I want to be able to build the application using a batch script and then duplicate this and build it for the other applications with a different database and different images. This is what I did so far. I have built the app and then copied the resulting build results. I cleaned these up a bit (for every action it has a cd statement and a setenv statement, which you only need once). But I can't get the thing to run because it uses built in function to execute certain statements, namely:

<com.apple.tools.product-pkg-utility>

and

builtin-infoPlistUtility

Can anybody help me to execute these command from a batch file?