Running another ruby script from a ruby script

Question

In ruby, is it possible to specify to call another ruby script using the same ruby interpreter as the original script is being run by?

For example, if a.rb runs b.rb

Answer 1

Avdi Grimm wrote a series of articles on the Devver blog about different ways to start Ruby subprocesses last summer:

• A Dozen (or so) Ways to Start Subprocesses in Ruby: Part 1
• A Dozen (or so) Ways to Start Subprocesses in Ruby: Part 2
• A Dozen (or so) Ways to Start Subprocesses in Ruby: Part 3
• Beware of pipe duplication in subprocesses

[Note: it appears that part 4 hasn't been published yet.]