安装RVM时报错 curl: (7) Failed to connect to raw.githubusercontent.com port 443: Connection refused
解决方案
https://www.jianshu.com/p/7daa4dee0562
You don't have write permissions for the /usr/bin directory.
解决放啊
sudo gem install -n / usr / local / bin sass
通过rvm安装Ruby详细步骤
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