安装cocoapods遇到的问题

ERROR:  While executing gem ... (Gem::FilePermissionError)

    You don't have write permissions for the /usr/bin directory.

解决链接： https://blog.csdn.net/SharkToping/article/details/79464581

cocoapod首次使用换源的问题

https://www.jianshu.com/p/c84c9a61e9fe