Mac :: Ruby :: Gem :: Rails

To install Ruby

curl -O ftp://ftp.ruby-lang.org/pub/ruby/1.8/ruby-1.8.7-p72.tar.gz
tar xzvf ruby-1.8.7-p72.tar.gz
cd ruby-1.8.7-p72
./configure --enable-shared --enable-pthread CFLAGS=-D_XOPEN_SOURCE=1
make
sudo make install
cd ..

To install Gem

curl -O http://production.cf.rubygems.org/rubygems/rubygems-1.3.7.tgz
tar zxvf rubygems-1.3.7.tgz
cd rubygems-1.3.7
sudo ruby setup.rb