undefined method `gem' for main:Object (NoMethodError)

fiercefe@sh113 [~/public_html/ruby_test]# ruby script/server
./script/../config/boot.rb:29: undefined method `gem' for main:Object
(NoMethodError)
from script/server:2

I did: rails ruby_test

then I tried to create a controller as shown above and incurred
errors, wondering if you know what's wrong. Additionally I can't run
the command: ruby script/server to start the server on the ruby
folder.

Any idea what to do from here? Should I contact my hosting?

I think you need to start your webserver from the application root directory.

hth,
Bill

You've got Rails 1.2.2 and Rubygems < 0.9.0, and gem
replaces require_gem method (see :

http://weblog.rubyonrails.org/2007/2/6/rails-1-2-2-sqlite3-gems-singular-resources

). So downgrade Rails or upgrade RubyGems.

   -- Jean-François.