Upgrading Ruby
Upgrading from Source
# remove ruby from yum
sudo yum remove ruby
# install readline
sudo yum install -y readline readline-devel
wget ftp://ftp.ruby-lang.org/pub/ruby/1.8/ruby-1.8.6-p287.tar.gz
tar xzvf ruby-1.8.6-p287.tar.gz
cd ruby-1.8.6-p287
./configure --prefix=/usr --with-readline-dir=/usr/local --enable-shared
make
sudo make install
cd ..
# install RubyGems
wget http://rubyforge.org/frs/download.php/45905/rubygems-1.3.1.tgz
tar xfz rubygems-*
cd rubygems-*
sudo ruby setup.rb
cd ..
# install Gems
sudo gem install rails termios mongrel mongrel_cluster --no-ri --no-rdoc
sudo gem install mysql -- --with-mysql-config
Upgrading via Yum
To upgrade to Ruby 1.8.5 from the CentOS Testing repository see Installing Ruby1.8.5
