Instalando ruby & rvm no ubuntu 11.04

ruby1.8-rvm-ubuntu-11.04

root@host:~# apt-get install build-essential
root@host:~# apt-get install zlib1g-dev libreadline5-dev libssl-dev libxml2-dev
root@host:~# apt-get install ruby1.8-dev ruby1.8 ri1.8 rdoc1.8 irb1.8 libreadline-ruby1.8 libruby1.8 libopenssl-ruby openssl sqlite3 libsqlite3-dev libsqlite3-ruby1.8 rubygems1.8
root@host:~# ln -s /usr/bin/ruby1.8 /usr/bin/ruby
root@host:~# ln -s /usr/bin/ri1.8 /usr/bin/ri
root@host:~# ln -s /usr/bin/rdoc1.8 /usr/bin/rdoc
root@host:~# ln -s /usr/bin/irb1.8 /usr/bin/irb

# Instalar rvm (Single-User installation)
marcos@host:~$ sudo apt-get install curl
marcos@host:~$ bash < <(curl -s https://rvm.beginrescueend.com/install/rvm)
marcos@host:~$ exit
marcos@host:~$ rvm install 1.9.2
marcos@host:~$ rvm use 1.9.2 --default
Using /home/marcos/.rvm/gems/ruby-1.9.2-p290
marcos@host:~$ nano ~/.gemrc
    :benchmark: false
    :verbose: true
    :update_sources: true
    gem: --no-ri --no-rdoc
    install: --env-shebang
    gemcutter_key: 66...cf
    :sources: 
    - http://gemcutter.org
    - http://gems.rubyforge.org/
    - http://gems.github.com/
    - http://gems.datamapper.org
    :backtrace: false
    :bulk_threshold: 1000
marcos@host:~$ gem install rails