我正在尝试在新机器上安装 rails 并运行以下命令问题:
gem install rails
ERROR: Could not find a valid gem 'rails' (>= 0), here is why:
Unable to download data from http://gems.rubyforge.org/ - Errno::ETIMEDOUT: Operation timed out - connect(2) (http://gems.rubyforge.org/latest_specs.4.8.gz)