cocoapods 安装的坑

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

    You don't have write permissions for the /System/Library/Frameworks/Ruby.framework/Versions/2.6/usr/lib/ruby/gems/2.6.0 directory.

你说没权限，那我就加上超级权限：

sudo gem install cocoapods

超级权限

sudo gem install cocoapods --user-install