sass 安装

1.安装ruby 官网下载ruby，点击exe安装包安装

2.命令安装sass

点击安装好的ruby环境命令框，进行安装sass

gem install sass

3.常见错误

(1) gem安装sass 报错:Could not find a valid gem 'sass' (>= 0), here is why:

解决：切换镜像源 gem sources -a http://ruby.taobao.org/

(2) 切换镜像源失败 Error fetching https://ruby.taobao.org/:

SSL_connect returned=1 errno=0 state=SSLv3 read server certificate B: ce

rtificate verify failed (https://ruby.taobao.org/specs.4.8.gz)

解决：

删除原gem源： gem sources --remove https://rubygems.org/

添加国内源： gem sources -a http://gems.ruby-china.org/

-------------------------------补充-------------------------------------

在Mac中切换的时候不管是使用http还是https，都无效，还是安装不了

一直报错

Error fetching http://gems.ruby-china.org/:

bad response Not Found 404 (https://gems.ruby-china.org/specs.4.8.gz)

后来执行了： sudo gem update --system

然后。gem sources -a https://gems.ruby-china.com/

成功了。记录一下

------------------------------------------------------------------------

打印是否替换成功: gem sources -l

更换成功后打印如下: http://gems.ruby-china.org/

切换成功之后：直接 gem install sass