Using Synaptic
warning: it appears that the Ubuntu package is currently 1.9.0, which you don’t want
Ruby 1.9 is available via the Synaptic installer. Be sure to select ruby1.9, irb1.9 and rubygems1.9 From Source
sudo apt-get -y install libc6-dev libssl-dev make build-essential libssl-dev libreadline5-dev zlib1g-dev
tar zxfv ruby-1.9.1-p0.tgz
cd ruby-1.9.1-p0
./configure
make
sudo make install
