PDFKitTool is a simple command line interface to Apple’s PDF Kit framework.
With it, you can manipulate PDF documents. It can combine several documents into one or burst multipage documents into multiple single-paged documents.
Combining multiple documents and storing the result to disk:
./PDFKitTool load one.pdf load two.pdf cat output combined.pdf
Bursting a multipage document into multiple single-paged documents:
./PDFKitTool load multipage.pdf burst output bursted.pdf
The tool is 100% open source. The source code and the universal binary are hosted on GitHub. PDFKitTool requires Mac OS X 10.5 or later. Enjoy!