Converting from Windows XP to Linux, I have formatted one of my
computers with Ubuntu 5,10 which has Ruby 1.8.3 installed. I can create
and execute ruby files (.rb) with no problems. However, when i try irb
bash reports that the file cannot be found. Same with ri.

I'm an experienced programmer but getting set up is driving me nuts.
I'm also having problems trying to download RubyGems and Rails, but I
have not really progressed far enough to worry about that yet. Help?

Les