ruby源替换为淘宝源
gem sources --remove http://rubygems.org/ gem sources -a http://ruby.taobao.org/ gem sources -l *** CURRENT SOURCES *** http://ruby.taobao.org 请确保只有 ruby.taobao.org gem install foo
gem sources --remove http://rubygems.org/ gem sources -a http://ruby.taobao.org/ gem sources -l *** CURRENT SOURCES *** http://ruby.taobao.org 请确保只有 ruby.taobao.org gem install foo