cocoapods安装中遇到的问题

如何下载和安装CocoaPods？

<1>更改下载源

$ gem sources --add https://gems.ruby-china.org/ --remove https://rubygems.org/$ gem sources -l*** CURRENT SOURCES ***https://gems.ruby-china.org

为何要--remove https://rubygems.org因为太慢，使用国内的镜像

<2>安装

sudo gem install cocoapods -V

<3>错误解决

ERROR:  While executing gem ... (OpenSSL::SSL::SSLError)

hostname "upyun.gems.ruby-china.org" does not match the server certificate

执行：gem update --system

ERROR:  While executing gem ... (Errno::EPERM)     Operation not permitted - /usr/bin/xcodeproj

执行：sudo gem install -n /usr/local/bin cocoapods