OS X EL Capitan installation cocoapods error Error

After upgrading OS X EL Capitan10.11, the original pod could not be used, reinstall Cocoapods, and discover

There was a problem running "sudo gem install cocoapods":

error:while executing gem ... (errno::eperm)         -/usr/bin/fuzzy_match

It is estimated that the gem version is not updated. Error occurred while executing sudo gem update--system

error:while executing gem ... (errno::eperm)         -/usr/bin/update_rubygems

It is estimated to upgrade the system and install Xcode7 after the cocoapods is not good, you have to upgrade

The solution executes the following directives:

sudo gem install-n/usr/local/bin cocoapods

OS X EL Capitan installation cocoapods error Error