From: Ryan Davis <ryand-ruby@...>
Date: 2012-08-20T06:10:50+09:00
Subject: Re: IRB doesn't work in command line


On Aug 19, 2012, at 10:14 , "Rafi K." <lists@ruby-forum.com> wrote:

> I've installed Ruby 1.93 in my windows 7 PC using Ruby 1.9.3-p194 one
> click installer. I can use "ruby" command to interpret files, but when I
> type "irb" it gives me the following error:
> 
> 
>    C:\Users\Acer>irb
>    F:/Programs/Ruby193/lib/ruby/site_ruby/1.9.1/rbreadline.rb:2111:in
> `expand_path': non-absolute home
>    (ArgumentError)

That says pretty much everything you need to know. Your $HOME environment variable is probably not set or set incorrectly.