ubuntu 安装rails

Installing Ruby

sudo apt-get update

sudo apt-get upgrade
sudo apt-get install git-core curl zlib1g-dev build-essential libssl-dev libreadline-dev libyaml-dev libsqlite3-dev sqlite3 libxml2-dev libxslt1-dev libcurl4-openssl-dev python-software-properties libffi-dev

# sudo apt-get install ruby

#sudo apt-get install ruby-dev

安装rubygems

如果ruby版本大于2.可以直接使用 ：

sudo gem update --ststem

如果上面的不行：

https://rubygems.org/pages/download

这个是rubygems下载页面，可以在这个页面获取到最新rubygems的链接 

# wget https://rubygems.org/rubygems/rubygems-2.6.8.tgz 

tar -xzf rubygems-2.6.8.tgz 

cd rubygems-2.6.8

sudo ruby setup.rb

The last step is to install Bundler

gem install bundler

gem install rails

Setting Up MySQL
sudo apt-get install mysql-server mysql-client libmysqlclient-dev
Final Steps
sudo apt-get install -y nodejs
And now for the moment of truth. Let's create your first Rails application:

#### If you want to use SQLite (not recommended)
rails new myapp

#### If you want to use MySQL
rails new myapp -d mysql

#### If you want to use Postgres
# Note that this will expect a postgres user with the same username
# as your app, you may need to edit config/database.yml to match the
# user you created earlier
rails new myapp -d postgresql

# Move into the application directory
cd myapp

# If you setup MySQL or Postgres with a username/password, modify the
# config/database.yml file to contain the username/password that you specified

# Create the database
rake db:create

rails server

You can now visit  http://localhost:3000  to view your new website!