This is a shell script for OS X / Linux that reads Nuke files and collects Nuke script and all support docs to a location you specify.
Nuke Scene Collector
Updated: 7 December 2015
Author: cgbeige
Compatible Nuke versions: 6.0 or later
Compatibility: Linux, Mac, Windows
Update: this is still available for download but I recommend using the Python version that is cross-platform and more powerful:
Free. Unsupported.