本文主要是介绍安装Jekyll Gem一直报Unable to download data from https://rubygems.org/的解决方案，希望对大家解决编程问题提供一定的参考价值，需要的开发者们随着小编来一起学习吧！
完整的错误信息如下：
ERROR: Could not find a valid gem 'rails' (>= 0), here is why:Unable to download data from https://rubygems.org/ - Errno::ETIMEDOUT: Connection timed out - connect(2) for "s3.amazonaws.com" port 443 (https://api.rubygems.org/latest_specs.4.8.gz)
后台在Google上找到解决方案：
sudo gem sources -r https://rubygems.org
sudo gem sources -a http://rubygems.org 貌似意思是将https替换成http，再试了一下，果然可以了，但是安装完后别忘了把它设回来：
sudo gem sources -r http://rubygems.org
sudo gem sources -a https://rubygems.orghttp://stackoverflow.com/a/19179835/1227911
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