> 1. Is there anyone can give me a list of extremely minimal files that have
> to be compiled to got ruby core interreter work properly ?
> 2. What is the minimal libs have to be loaded/compiled to write :
> ++ Jabber client
> ++ BASH similar : Cat, Cut, sed

It seems others have done work on embedded systems
with Ruby before, so this may be useful.

some links on MiniRuby:

http://wiki.rubygarden.org/Ruby/page/search?search_data[title_data]=miniruby&commit=in+Body

please let us know about your project progress

good luck !