I'll readily admit that I haven't looked into this much yet.  I  
thought I would ask here first and get the 10,000 foot view and  
pointers for where to dig further.

I'm interested in RubyGems multiple versions feature.  I need to be  
able to select the version that runs at any given time.  The  
complication is that the gem installs a bin/ script that is the  
primary interface.  Can someone explain how RubyGems handles that?

Thanks.

James Edward Gray II