Ruby on Rails is an application stack that provides developers with a framework to quickly create a variety of web applications.
so, how to use it?
very easy,please follow these steps is install and use it.
step 1. Install git and cURL
First of all, update your package repository.
sudo apt-get update
git is a simple, fast and efficient version control system. It is easy to learn, so even if you don’t have any experience with git you can try it in your next rails project (or any other project). you will love it.
sudo apt-get install git
Curl is a simple command line utility for getting file over web protocols, based on libcurl. To install curl simply execute –
sudo apt-get install curl
step 2. Install RVM and Dependencies
RVM is not strictly required but it makes ruby management a lot easier. You can try different implementations of ruby, different versions of ruby and all without any pain. So it’s strongly recommended. but RVM requires the command to be executed as login shell, so open a terminal and go to Edit -> Profile Preferences -> Title and Command and check the box that says “Run Command as a login shell“. (look at the above snapshot)
curl -L get.rvm.io | bash -s stable
Now, you must load the RVM
Then install additional dependencies specified by the RVM –
Now, you got RVM running, installing and running multiple versions or just one version of Ruby is very simple. To install Ruby just pass the version number to rvm install command (or some other implementation of ruby if you want; RVM also supports rbx, ree, JRuby, IRonRuby other than the default MRI) –
rvm install 1.9.3
Then select the Ruby version you want to use, (or make it default so that you don’t have to select it again in new session)
rvm use 1.9.3 --default
Now, you can check the version of ruby, you’re running right now-
step 4. Install Rails
RVM installs ruby as well as the gem utility (managing ruby libraries). To install rails, simply install it using the gem. It will automatically install the latest version unless you specify the version explicitly.
gem install rails
Now You’re ready to go.
rails new app_name
Now, open a browser and go to http://localhost:3000.