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How to Install Ruby 1.9.3 and Rubygems 1.8.24 on CentOS 6.2

Ruby is an object-oriented programming language that is similar in syntax to Perl and Python. The version of Ruby that ships with CentOS 6.2 is 1.8.7. If you need the latest version, you can download, compile and install Ruby from source code. This is a quick tutorial on installing Ruby 1.9.3 and Rubygems 1.8.24 on CentOS 6.2 from source.

Make sure your operating system packages are up to date by executing the following command:

yum update -y

In order to have all the proper dependencies installed, execute the following command:

yum groupinstall "Development Tools"

Then, follow the steps described below:

cd /root/
wget http://ftp.ruby-lang.org/pub/ruby/1.9/ruby-1.9.3-p194.tar.gz

tar xvzf ruby-1.9.3-p194.tar.gz
cd ruby-1.9.3-p194
make install

Once the install is complete, verify the version of Ruby:

ruby --version
ruby 1.9.3p194 (2012-04-20 revision 35410)

Update to the latest RubyGems version (RubyGems is a sophisticated package management framework for Ruby.):

cd /root/
wget http://production.cf.rubygems.org/rubygems/rubygems-1.8.24.tgz
tar xvzf rubygems-1.8.24.tgz
cd rubygems-1.8.24
ruby setup.rb

Verify the version of RubyGems:

gem --version

Ensure you have the latest gem versions:

gem update --system

Install the Rake build language (Rake is a build tool written in Ruby, similar to make):

gem install rake

Install all of Rails and its dependencies:

gem install rails

List the installed gems:

gem list

That’s it! You now have a full Ruby on Rails stack up on CentOS 6.2.

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