Installing ruby on CentOS 5.5

Upgrade Packages

# yum update

Installing Recommended Packages

# yum install gcc-c++ patch readline readline-devel zlib zlib-devel 

# yum install libyaml-devel libffi-devel openssl-devel make 

# yum install bzip2 autoconf automake libtool bison iconv-devel

Install RVM ( Ruby Version Manager )

# curl -L get.rvm.io | bash -s stable

Setup RVM Environment

# source /etc/profile.d/rvm.sh

Install Required Ruby Version

rvm install 1.9.3

Install Another Version ( if Required )

# rvm install 2.2.1

Setup Default Ruby Version

# rvm use 1.9.3 --default 

Check Current Ruby Version

# ruby --version