I had downloaded ruby, rails, and rubygems previously on my hard drive
when I ran Windows. I just downloaded Ubuntu and tried to use RoR but it
wasn’t working, so I figured I had to follow the installation procedure
listed here Getting Started with Rails — Ruby on Rails Guides to get it
working. When I type in
sudo gem install rails
I get the following error message
/usr/local/lib/site_ruby/1.9.1/rubygems/package.rb:383:in
alias_method': undefined method is_file’ for class
Gem::Package::TarReader::Entry' (NameError) from /usr/local/lib/site_ruby/1.9.1/rubygems/package.rb:383:in class:Entry’
from /usr/local/lib/site_ruby/1.9.1/rubygems/package.rb:319:in
<class:TarReader>' from /usr/local/lib/site_ruby/1.9.1/rubygems/package.rb:311:in module:Package’
from /usr/local/lib/site_ruby/1.9.1/rubygems/package.rb:46:in
<module:Gem>' from /usr/local/lib/site_ruby/1.9.1/rubygems/package.rb:18:in <top
(required)>’
from /usr/local/lib/site_ruby/1.9.1/rubygems/custom_require.rb:21:in
require' from /usr/local/lib/site_ruby/1.9.1/rubygems/custom_require.rb:21:in require’
from /usr/local/lib/site_ruby/1.9.1/rubygems/builder.rb:1:in <top (required)>' from /usr/local/lib/site_ruby/1.9.1/rubygems/custom_require.rb:21:in require’
from /usr/local/lib/site_ruby/1.9.1/rubygems/custom_require.rb:21:in
require' from /usr/local/lib/site_ruby/1.9.1/rubygems.rb:61:in manage_gems’
from /usr/bin/gem:4:in `’
I have no idea how to solve this. At this point I just want to delete
everything having to do with rails and ruby and start over again. How do
I do this?