Installing Rails: “File not found: lib” [duplicate]

Answer 1

# sudo gem install rdoc
# sudo gem install rdoc-data
# sudo vim /var/lib/gems/1.8/gems/rdoc-data-2.5.3/bin/rdoc-data

rdoc-data version 2.5.3 is depend on your version. My Marveric ruby path is /usr/bin/ruby, But my rdoc-data ruby path wasn't. Then I change it.

EDIT/

#!/usr/bin/ruby -w

require 'rubygems'
require 'rdoc/data'

RDoc::Data.run

/EDIT

# sudo /var/lib/gems/1.8/gems/rdoc-data-2.5.3/bin/rdoc-data --install
# sudo gem rdoc --all --overwrite
# sudo mkdir -p /var/lib/gems/1.8/gems/rails-3.0.6/lib
# sudo gem rails

Good luck!