[prog] Ruby require question

[Rachel McConnell]

Hi experts,

In Ruby, dependencies are declared by:

   require 'somestring'

However, as far as I can tell, the string passed to the require method 
doesn't need to match up with the actual name of a gem, or a non-gem 
package (if such still exist).  How can I tell what package to install 
to fulfil the dependency?

Thanks much!
Rachel