安装cocoapods最新版本

卸载 cocoapods

$ sudo gem uninstall cocoapods 

准备

$ gem sources -l

$ gem sources --remove https://rubygems.org/

$ gem sources -a https://ruby.taobao.org/

$ gem sources -l

sudo gem update --system

安装

$ sudo gem install -n /usr/local/bin cocoapods

$ pod setup

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