安裝 cocoapods 報錯：
ERROR:? Could not find a valid gem 'cocoapods' (>= 0), here is why:
Unable to download data fromhttps://ruby.taobao.org/- bad response Not Found 404 (https://gems.ruby-china.org/specs.4.8.gz)
該問題主要是 鏡像 的問題：
Mac:~ mac$ sudo gem install -n/usr/local/bin cocoapodsPassword:ERROR:? Could not find a valid gem'cocoapods'(>=0), here is why:? ? ? ? ? Unable to download datafromhttps://ruby.taobao.org/ - bad response Not Found 404 (https://gems.ruby-china.org/specs.4.8.gz)-----------------------------------------https://gems.ruby-china.org/ 訪問不了域名改為https://gems.ruby-china.com/-----------------------------------------所以替換 ruby-china 提供鏡像灰蛙，正確的操作是：$ gem sources --remove https://rubygems.org/$ gem sources --remove https://ruby.taobao.org/? ? // 如果安裝了淘寶的鏡像,也刪除// 等有反應(yīng)之后再敲入以下命令$ gem sources -a https://gems.ruby-china.com/為了驗證你的Ruby鏡像是并且僅是ruby-china柿顶，可以用以下命令查看：$ gem sources -l具體效果如下：192:~ mac$ gem sources --remove https://rubygems.org/source https://rubygems.org/ not present in cache192:~ mac$ gem sources --remove https://ruby.taobao.org/ https://ruby.taobao.org/ removed from sources192:~ mac$ gem sources -a https://gems.ruby-china.com/https://gems.ruby-china.com/ added to sources192:~ mac$ gem sources -l*** CURRENT SOURCES ***https://gems.ruby-china.com/192:~ mac$ sudo gem update --system// 更新一下Latest version already installed. Done.$ sudo gem install -n /usr/local/bin cocoapods// 安裝最新版本的 cocoapods
