This one slipped past me but thanks to twitter it came to my attention. I have been looking for a way for a number of years to run AutoCAD without the GUI for batch tasks. Now in 2013 it looks like its here at long last!
“Picture this: a stripped down version of AutoCAD – but only from a UI perspective – that can be executed from a standard Command Prompt. We’re talking about a version with almost all the capabilities of full AutoCAD – with the ability to load certain applications and execute scripts – but launches in a couple of seconds (if you have a slow machine 🙂 and is absolutely perfect for batch operations.”
Updated : further link for commands that work http://through-the-interface.typepad.com/through_the_interface/2012/03/commands-that-work-in-the-autocad-2013-core-console.htm