Installing Ruby 1.9.2

wget ftp://ftp.ruby-lang.org//pub/ruby/1.9/ruby-1.9.2-p0.tar.gz
tar -xzf ruby-1.9.2-p0.tar.gz
pushd .
cd ruby-1.9.2.p0
./configure \
--prefix=/usr/local \
--with-arch=x86_64 \
--program-suffix=19 \
--enable-shared
make
sudo make install
popd