Question

I execute for instance:

gem list

and I get this:

abstract (1.0.0)
actionmailer (3.2.1, 3.1.3, 3.1.1, 3.0.5)
actionpack (3.2.1, 3.1.3, 3.1.1, 3.0.5)
activemodel (3.2.1, 3.1.3, 3.1.1, 3.0.5)
(...)
uglifier (1.2.3, 1.2.2, 1.1.0, 1.0.3)
webrat (0.7.3)
xpath (0.1.4)

Them if I try with

irb --simple-prompt
>> require 'webrat'

I get

LoadError: no such file to load -- webrat
    from (irb):1:in `require'
    from (irb):1
    from :0

And this happens with every Gem on the list. What’s wrong? I’m using Ubuntu 11.10. Sorry if this is dumb, but I got stuck.

Answer 1

You need to require rubygems before you can require any gems. You can do this in irb:

$ irb --simple-prompt
>> require 'rubygems'
>> require 'webrat'

or when starting irb up:

$ irb --simple-prompt -r rubygems
>> require 'webrat'