On Tue, Mar 06, 2007 at 01:30:20PM +0900, chris wrote:
> I am trying to install ruby on ubuntu Edgy, but this is the error that
> I am getting.
...
> chris@chris-laptop:~/Desktop/rubygems-0.9.2/rubygems-0.9.0$ sudo ruby
> setup.rb
> setup.rb:52:in `require': no such file to load -- rbconfig (LoadError)
> from setup.rb:52

I don't think you're trying to install Ruby - I think you're trying to
install rubygems.

Assuming you installed ruby as the ubuntu package, then the bit you're
missing can be installed using

   apt-get install ruby1.8-dev

B.