- Author: Lin Xiangyu
Ruby on Rails
Ruby on Rails is one of the most popular web development framework, it’s build upon Ruby Programming Language, and it’s the hottest web development stack currently.
Rbenv is a shell script tools created by Sam Stephenson. It’s used for groom your app’s Ruby environment.Use rbenv can pick a Ruby version for your application and guarantee that your development environment matches production.
rbenv works by inserting a directory of shims at the front of your PATH:
Through a process called rehashing, rbenv maintains shims in that directory to match every Ruby command across every installed version of Ruby—irb, gem, rake, rails, ruby, and so on.
CentOS is derived from Red Hat Enterprise Linux. The target users of these distributions are usually businesses, which require their systems to be running the most stable way for a long time.So we are going to use CentOS 6.5 running our applications.
Step One – Install dependencies
Before, installing any package, it’s always recommended to update package repository cache use yum.
sudo yum update
Now,in order to get necessary development tools and dependencies, run the following:
sudo yum groupinstall -y 'development tools' sudo yum install -y gcc-c++ glibc-headers openssl-devel readline libyaml-devel readline-devel zlib zlib-devel sqlite-devel
Step Two – Install Rbenv and ruby-build
Then we are ready to get Rbenv downloaded installed, run the following to check out rbenv into ~/.rbenv:
git clone git://github.com/sstephenson/rbenv.git ~/.rbenv
Add ~/.rbenv/bin to your $PATH for access to the rbenv command-line utility:
echo 'export PATH="$HOME/.rbenv/bin:$PATH"' >> ~/.bash_profile
Add rbenv init to your shell to enable rbenv shims and autocompletion.
echo 'eval "$(rbenv init -)"' >> ~/.bash_profile
Ruby-build is a Rbenv plugin which provides the rbenv install command that simplifies the process of installing new Ruby versions. Install rbenv-build:
git clone https://github.com/sstephenson/ruby-build.git ~/.rbenv/plugins/ruby-build
reloaded your bash_profile to enable rbenv command:
Step Three – Install Ruby
Install Ruby 2.1.0 and make it the default
rbenv install 2.1.0 rbenv rehash rbenv global 2.1.0
Now you can run:
to verify your ruby environment has been installed successful。 It will output something like this:
ruby 2.1.0p0 (2013-12-25 revision 44422) [x86_64-linux]
Step Four – Install Nodejs
ExecJS supports these runtimes:
- therubyracer – Google V8 embedded within Ruby
- therubyrhino – Mozilla Rhino embedded within JRuby
- Microsoft Windows Script Host (JScript)
Node.js is available from the Fedora Extra Packages for Enterprise Linux (EPEL) repository.
Extra Packages for Enterprise Linux (or EPEL) is a Fedora Special Interest Group that creates, maintains, and manages a high quality set of additional packages for Enterprise Linux, including, but not limited to, Red Hat Enterprise Linux (RHEL), CentOS and Scientific Linux (SL), Oracle Enterprise Linux(OEL).
To check if you have EPEL, run
if you don’t see epel, install it via RPM
rpm -Uvh http://download-i2.fedoraproject.org/pub/epel/6/i386/epel-release-6-8.noarch.rpm
And then run the following command to install node:
sudo yum install nodejs --enablerepo=epel
Step Four – Install Rails Gem and test it.
Rails 4.0 needs RubyGems 2.0.3, so you have to update your system by using following command
gem update --system 2.0.3
Now, you can install the rails gem
gem install rails rbenv rehash
Test your rails:
rails new projectname cd projectname rails server
now open your browser and open http://your-server-ip:3000,you can find the rails project default page.