安装cocoapods的时候显示没有权限：You don't have write permissions for the /Library/Ruby/Gems/2.0.0 directory.

转自:https://blog.csdn.net/m7723sun/article/details/51076262

安装cocoapods没有权限的时候，本来是$sudo gem install cocoapods ，但是显示没有权限，换成这句$sudo gem install -n /usr/local/bin cocoa pods

ERROR:  While executing gem ... (Errno::EPERM)

    Operation not permitted - /usr/bin/pod

bogon:~ my$ sudo gem install -n /usr/local/bin cocoapods