标签：des style blog http color io os 使用 java
零、Ubuntu的安装
官网下载，我装的是12.04的x64版。
一、系统升级
更换ubuntu的源
1.备份更新源
$ sudo cp /etc/apt/sources.list /etc/apt/sources.list.backup
2.修改更新源
$ sudo gedit /etc/apt/sources.list
使用以下网易源或搜狐源，直接替换文件内容（教育网用户请搜索教育网神速专用源）
网易：
deb http://mirrors.163.com/ubuntu/ precise main restricted
deb-src http://mirrors.163.com/ubuntu/ precise main restricted
deb http://mirrors.163.com/ubuntu/ precise-updates main restricted
deb-src http://mirrors.163.com/ubuntu/ precise-updates main restricted
deb http://mirrors.163.com/ubuntu/ precise universe
deb-src http://mirrors.163.com/ubuntu/ precise universe
deb http://mirrors.163.com/ubuntu/ precise-updates universe
deb-src http://mirrors.163.com/ubuntu/ precise-updates universe
deb http://mirrors.163.com/ubuntu/ precise multiverse
deb-src http://mirrors.163.com/ubuntu/ precise multiverse
deb http://mirrors.163.com/ubuntu/ precise-updates multiverse
deb-src http://mirrors.163.com/ubuntu/ precise-updates multiverse
deb http://mirrors.163.com/ubuntu/ precise-backports main restricted universe multiverse
deb-src http://mirrors.163.com/ubuntu/ precise-backports main restricted universe multiverse
deb http://mirrors.163.com/ubuntu/ precise-security main restricted
deb-src http://mirrors.163.com/ubuntu/ precise-security main restricted
deb http://mirrors.163.com/ubuntu/ precise-security universe
deb-src http://mirrors.163.com/ubuntu/ precise-security universe
deb http://mirrors.163.com/ubuntu/ precise-security multiverse
deb-src http://mirrors.163.com/ubuntu/ precise-security multiverse
deb http://extras.ubuntu.com/ubuntu precise main
deb-src http://extras.ubuntu.com/ubuntu precise main
搜狐：
deb http://mirrors.sohu.com/ubuntu/ precise main restricted
deb-src http://mirrors.sohu.com/ubuntu/ precise main restricted
deb http://mirrors.sohu.com/ubuntu/ precise-updates main restricted
deb-src http://mirrors.sohu.com/ubuntu/ precise-updates main restricted
deb http://mirrors.sohu.com/ubuntu/ precise universe
deb-src http://mirrors.sohu.com/ubuntu/ precise universe
deb http://mirrors.sohu.com/ubuntu/ precise-updates universe
deb-src http://mirrors.sohu.com/ubuntu/ precise-updates universe
deb http://mirrors.sohu.com/ubuntu/ precise multiverse
deb-src http://mirrors.sohu.com/ubuntu/ precise multiverse
deb http://mirrors.sohu.com/ubuntu/ precise-updates multiverse
deb-src http://mirrors.sohu.com/ubuntu/ precise-updates multiverse
deb http://mirrors.sohu.com/ubuntu/ precise-backports main restricted universe multiverse
deb-src http://mirrors.sohu.com/ubuntu/ precise-backports main restricted universe multiverse
deb http://mirrors.sohu.com/ubuntu/ precise-security main restricted
deb-src http://mirrors.sohu.com/ubuntu/ precise-security main restricted
deb http://mirrors.sohu.com/ubuntu/ precise-security universe
deb-src http://mirrors.sohu.com/ubuntu/ precise-security universe
deb http://mirrors.sohu.com/ubuntu/ precise-security multiverse
deb-src http://mirrors.sohu.com/ubuntu/ precise-security multiverse
deb http://extras.ubuntu.com/ubuntu precise main
deb-src http://extras.ubuntu.com/ubuntu precise main
3.更新
$ sudo apt-get update
以上一步必须正常通过。
安装curl：
$ sudo apt-get install curl
二、使用RVM安装Ruby
RVM = Ruby Version Manager
输入以下命令安装RVM，并安装最新stable版的ruby
$ \curl -L https://get.rvm.io | bash -s stable --ruby
安装完成后，输入以下命令检查ruby安装情况：
$ ruby -v
ruby 2.1.2p95 (2014-05-08 revision 45877) [x86_64-linux]
若已安装RVM，则使用以下命令：
$ rvm get stable --autolibs=enable
$ rvm install ruby
$ rvm --default use ruby-2.1.2
三、安装JavaScript Runtime
$ sudo apt-get install nodejs
四、更新Gem Manager
更新gem：
$ gem update --system
$ gem -v
2.4.1
更新gem源：
$ gem source -l
$ gem source -r https://rubygems.org/
$ gem source -a http://ruby.taobao.org/
五、更新RVM全局gemset
查看全局gemset中的gem：
$ rvm gemset use global
$ gem list
更新至最新的stable gem：
$ gem update
安装nokogiri：（慢）
$ gem install nokogiri
六、安装Rails
建立一个rails4.1的gemset
$ rvm use ruby-2.1.2@rails4.1 --create
安装最新版本的rails
$ gem install rails
$ rails -v
例如，你可以再建立一个rails3.2的gemset，安装
$ rvm use ruby-2.1.2@rails3.2 --create
$ gem install rails --version=3.2.19
$ rails -v
在gemset间切换：
$ rvm use ruby-2.1.2@rails4.1
$ rvm use ruby-2.1.2@rails3.2
七、rails的hello world
切换至工作目录
$ rails new demo
$ rails s
用浏览器打开http://localhost:3000/，显示如下图片说明安装成功
本文参考http://railsapps.github.io/installrubyonrails-ubuntu.html，感谢作者对新人的无私帮助
Ubuntu 12.04，配置Ruby on Rails开发环境
标签：des style blog http color io os 使用 java
原文地址：http://www.cnblogs.com/manaleak/p/3974966.html
