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.

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还有就是安装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



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