hadeys的专栏

<br />今天尝试了更新instant rails的版本，用gem update --system命令，结果报错：<br />Error: While executing gem ... (Gem::RemoteSourceException)<br />   HTTP Response 302 fetching http://gems.rubyforge.org/yaml<br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br

<br /><br />1.安装ruby<br />sudo apt-get install ruby<br />ruby -v 查看ruby的版本<br />2.安装Ruby语言软件包管理系统(Package Management System)RubyGems<br />sudo apt-get install rubygems<br />gem install rubygems-update<br />gem update<br />3.安装rails<br />sudo apt-get instal