我正在尝试使用以下命令安装 rails:
$ sudo gem install rails --source http://gems.rubyonrails.org
但这就是我得到的:
WARNING: RubyGems 1.2+ index not found for:
http://gems.rubyonrails.org/
RubyGems will revert to legacy indexes degrading performance.
ERROR: While executing gem ... (Gem::Package::FormatError)
No metadata found!
任何帮助将不胜感激!