How to install ruby/rails dev. environment on Ubuntu 11.10

rails-install.sh

# Build-tools + Git
sudo apt-get install build-essential git-core

# Install required libraries & tools
sudo apt-get install bison openssl libreadline6 libreadline6-dev curl zlib1g zlib1g-dev libssl-dev libyaml-dev libxml2-dev libxslt-dev autoconf

# -- SQLite3 support
sudo apt-get install libsqlite3-0 libsqlite3-dev sqlite3 

# -- PostgreSQL support
sudo apt-get install postgresql postgresql-client postgresql-doc libpq-dev

# -- Imagemagick
sudo apt-get install imagemagick libmagickcore-dev libmagickwand-dev

# Install RVM
bash < <(curl -s https://rvm.beginrescueend.com/install/rvm)

# Proceed by installing ruby & gems of choice... f.ex: ruby 1.9.2
rvm install 1.9.2
rvm use 1.9.2 --default

Very good, thankz a lot!!