Unable to install rails with jRuby

Question

I am trying to install the rails with jRuby with the following command

jruby -S gem install rails -v 3.0.6

But stuck with the e

Answer 1

I had this problem just a bit ago, but it was with rspec. Try this:
jruby --1.9 -S gem install rails -v 3.0.6

This tells jruby to use the ruby 1.9 interpreter.