安装最后一步:
$ sudo gem install cocoa pods
终端会出错:
ERROR: While executing gem ... (Errno::EPERM)
Operation not permitted - /usr/bin/xcodeproj
将其改成等待几秒即可:
$ sudo gem install -n /usr/local/bin cocoapods
系统升级更新,cocoaPods不可用的问题
来源：华佗小知识