Ubuntu 12.04, configure the Ruby on Rails Development Environment

Installation of ubuntu

Download from the official website. I installed x64 version 12.04.

 

I. System Upgrade

Change the Ubuntu Source

1. Back up the update source

$ sudo cp /etc/apt/sources.list /etc/apt/sources.list.backup

2. Modify the update source

$ sudo gedit /etc/apt/sources.list

Use the following yiyuan or Sohu sources to directly replace the file content (for CERNET users, please search for the exclusive source of CERNET)

Netease:

deb http://mirrors.163.com/ubuntu/ precise main restricteddeb-src http://mirrors.163.com/ubuntu/ precise main restricteddeb http://mirrors.163.com/ubuntu/ precise-updates main restricteddeb-src http://mirrors.163.com/ubuntu/ precise-updates main restricteddeb http://mirrors.163.com/ubuntu/ precise universedeb-src http://mirrors.163.com/ubuntu/ precise universedeb http://mirrors.163.com/ubuntu/ precise-updates universedeb-src http://mirrors.163.com/ubuntu/ precise-updates universedeb http://mirrors.163.com/ubuntu/ precise multiversedeb-src http://mirrors.163.com/ubuntu/ precise multiversedeb http://mirrors.163.com/ubuntu/ precise-updates multiversedeb-src http://mirrors.163.com/ubuntu/ precise-updates multiversedeb http://mirrors.163.com/ubuntu/ precise-backports main restricted universe multiversedeb-src http://mirrors.163.com/ubuntu/ precise-backports main restricted universe multiversedeb http://mirrors.163.com/ubuntu/ precise-security main restricteddeb-src http://mirrors.163.com/ubuntu/ precise-security main restricteddeb http://mirrors.163.com/ubuntu/ precise-security universedeb-src http://mirrors.163.com/ubuntu/ precise-security universedeb http://mirrors.163.com/ubuntu/ precise-security multiversedeb-src http://mirrors.163.com/ubuntu/ precise-security multiversedeb http://extras.ubuntu.com/ubuntu precise maindeb-src http://extras.ubuntu.com/ubuntu precise main

Sohu:

deb http://mirrors.sohu.com/ubuntu/ precise main restricteddeb-src http://mirrors.sohu.com/ubuntu/ precise main restricteddeb http://mirrors.sohu.com/ubuntu/ precise-updates main restricteddeb-src http://mirrors.sohu.com/ubuntu/ precise-updates main restricteddeb http://mirrors.sohu.com/ubuntu/ precise universedeb-src http://mirrors.sohu.com/ubuntu/ precise universedeb http://mirrors.sohu.com/ubuntu/ precise-updates universedeb-src http://mirrors.sohu.com/ubuntu/ precise-updates universedeb http://mirrors.sohu.com/ubuntu/ precise multiversedeb-src http://mirrors.sohu.com/ubuntu/ precise multiversedeb http://mirrors.sohu.com/ubuntu/ precise-updates multiversedeb-src http://mirrors.sohu.com/ubuntu/ precise-updates multiversedeb http://mirrors.sohu.com/ubuntu/ precise-backports main restricted universe multiversedeb-src http://mirrors.sohu.com/ubuntu/ precise-backports main restricted universe multiversedeb http://mirrors.sohu.com/ubuntu/ precise-security main restricteddeb-src http://mirrors.sohu.com/ubuntu/ precise-security main restricteddeb http://mirrors.sohu.com/ubuntu/ precise-security universedeb-src http://mirrors.sohu.com/ubuntu/ precise-security universedeb http://mirrors.sohu.com/ubuntu/ precise-security multiversedeb-src http://mirrors.sohu.com/ubuntu/ precise-security multiversedeb http://extras.ubuntu.com/ubuntu precise maindeb-src http://extras.ubuntu.com/ubuntu precise main

3. Update

$ sudo apt-get update

The above steps must pass normally.

Install curl:

$ sudo apt-get install curl

 

Ii. Use rvm to install Ruby

Rvm = Ruby version Manager

Run the following command to install rvm and install Ruby of the latest stable version.

$ \curl -L https://get.rvm.io | bash -s stable --ruby

After the installation is complete, enter the following command to check the ruby installation:

$ ruby -vruby 2.1.2p95 (2014-05-08 revision 45877) [x86_64-linux]

If you have installed rvm, run the following command:

$ rvm get stable --autolibs=enable$ rvm install ruby$ rvm --default use ruby-2.1.2

 

3. Install JavaScript Runtime

$ sudo apt-get install nodejs

 

4. Update gem Manager

Update GEM:

$ gem update --system$ gem -v2.4.1

Update the gem Source:

$ gem source -l$ gem source -r https://rubygems.org/$ gem source -a http://ruby.taobao.org/

5. Update the rvm global gemset

View the gem in the global gemset:

$ rvm gemset use global
$ gem list

Update stable gem to the latest version:

$ gem update

Install nokogiri: (slow)

$ gem install nokogiri

 

6. Install rails

Create a gemset for rails4.1

$ rvm use ruby-2.1.2@rails4.1 --create

Install the latest version of rails

$ gem install rails$ rails -v

For example, you can create another gemset for rails3.2 to install

$ rvm use ruby-2.1.2@rails3.2 --create$ gem install rails --version=3.2.19$ rails -v

Switch between gemset:

$ rvm use ruby-2.1.2@rails4.1$ rvm use ruby-2.1.2@rails3.2

 

7. rails's hello World

Switch to working directory

$ rails new demo
$ rails s

Open http: // localhost: 3000/in the browser, and the installation is successful if it is displayed as an example.

 

For more information, see http://railsapps.github.io/installrubyonrails-ubuntu.html.

Ubuntu 12.04, configure the Ruby on Rails Development Environment