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Learning ruby



Install default 
1:  # Default  
2:  yum groupinstall "Development Tools"  
3:  yum install ruby  
4:  yum install gcc make automake autoconf curl-devel openssl-devel zlib-devel httpd-devel apr-devel apr-util-devel sqlite-devel  
5:  yum install ruby-rdoc ruby-devel  
6:  yum install rubygems  
7:  gem update
Install and use ruby 2.2.x - user: root 
1:  yum groupinstall -y development  
2:  gpg --keyserver hkp://keys.gnupg.net --recv-keys 409B6B1796C275462A1703113804BB82D39DC0E3
3:  curl -sSL https://get.rvm.io | bash -s stable
4:  source /etc/profile.d/rvm.sh  
5:  rvm install 2.2.4  
6:  gem update  
7:  gem install rails  
8:  ruby --version 
9:  rvm default 

-:  Start by default after rebooting the system:

10: cd /usr/local/rvm/gems/ruby-2.2.4/bin
    echo "export PATH=$(pwd):\$PATH" >> ~/.bashrc

11: cd /usr/local/rvm/gems/ruby-2.2.4@global/bin
    echo "export PATH=$(pwd):\$PATH" >> ~/.bashrc

12: cd /usr/local/rvm/rubies/ruby-2.2.4/bin
    echo "export PATH=$(pwd):\$PATH" >> ~/.bashrc

13: cd /usr/local/rvm/bin
    echo "export PATH=$(pwd):\$PATH" >> ~/.bashrc

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