gem install cocoapods --pre出错

最近一次gem install cocoapods --pre for CocoaPods 0.38.0.beta.2

出现以下错误：

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

You don't have write permissions for the /Library/Ruby/Gems/2.0.0 directory.

做了以下操作：

1. sudo gem uninstall cocoapods 

2.选择你想要的versions

3.sudo gem install cocoapods

ok, it works, have fun!

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now, cocoapods 1.0.0 

1. sudo gem install cocoapods

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

Operation not permitted - /usr/bin/xcodeproj

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

4. pod --version

5. 1.0.0  perfect

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CocoaPods升级到1.0.0 版本之后必须配置target

platform :ios, '8.0'

use_frameworks!

target 'MyApp' do

pod 'AFNetworking', '~> 2.6'

pod 'ORStackView', '~> 3.0'

pod 'SwiftyJSON', '~> 2.3'

end

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ERROR: While executing gem ... (Errno::EPERM) Operation not permitted - /usr/bin/update_rubygems

sudo gem update -n /usr/local/bin --system

or cocoapods install

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