标签： ruby ruby-on-rails-3 ubuntu
请原谅我，但我还是Linux的新世界。我在ubuntu 13.04下使用rvm和ruby 2我的问题是我无法升级rails。
gem install rails
ERROR: While executing gem ... (Gem::FilePermissionError) You don't have write permissions for the /home/me/.rvm/gems/ruby-2.0.0-p0 directory.