ruby 1.8 + ruby 1.9

##### ruby 1.8

wget ftp://ftp.ruby-lang.org/pub/ruby/stable-snapshot.tar.gz
tar xzf stable*.tar.gz
cd ruby

nano version.h
...change => #define RUBY_PATCHLEVEL -1
...to => #define RUBY_PATCHLEVEL 1

./configure --prefix=/usr/local --with-openssl-dir=/usr --with-readline-dir=/usr --with-zlib-dir=/usr
sudo make && sudo make install && sudo make install-doc

then install gems

RUBYGEMS="rubygems-1.0.1"
wget http://rubyforge.org/frs/download.php/29548/$RUBYGEMS.tgz
tar xzf $RUBYGEMS.tgz
cd $RUBYGEMS
sudo /usr/local/bin/ruby setup.rb
cd ..

##### ruby1.9

svn co http://svn.ruby-lang.org/repos/ruby/branches/ruby_1_9_1
cd ruby_1_9_1
./configure --prefix=/Users/indiehead/ruby19
 --with-openssl-dir=/usr --with-readline-dir=/usr --with-zlib-dir=/usr

sudo make && sudo make install && sudo make install-doc

to activate

PATH=/Users/indiehead/ruby19/bin:$PATH
ruby -v
=> ruby 1.9.1

##### Gem Essentials

sudo gem sources -a http://gems.github.com
sudo gem update --system

sudo gem install rails rake rack sinatra capistrano deprec mongrel thin cucumber webrat rspec rspec-rails builder rdiscount RedCloth
sudo gem install pony sqlite3-ruby fastercsv
sudo gem install mysql
sudo gem install ZenTest
sudo gem install prawn prawn-layout

....
sudo aptitude install libfreeimage3 libfreeimage-dev
sudo gem install image_science

sudo aptitude install mysql-server-5.0 libmysqlclient15-dev
sudo gem install mysql