Install Ruby 2, Rail 4 on Ubuntu 12.04 LTS

gistfile1.txt

#install required packages
apt-get update
apt-get upgrade -y
apt-get install -y git curl build-essential libssl-dev libcurl4-openssl-dev nodejs

#optional
apt-get install libsqlite3-dev sqlite3



#create deployment user
adduser deployer
addgroup deployer sudo
su deployer

#install rbenv, ruby and bundler 
git clone git://github.com/sstephenson/rbenv.git ~/.rbenv
echo 'export PATH="$HOME/.rbenv/bin:$PATH"' >> ~/.profile
echo 'eval "$(rbenv init -)"' >> ~/.profile
exec $SHELL -l
git clone git://github.com/sstephenson/ruby-build.git ~/.rbenv/plugins/ruby-build
rbenv install 2.0.0-p195
rbenv global 2.0.0-p195
gem install bundler

#install passenger
gem install passenger 
rbenv rehash
passenger-install-nginx-module
#choose option 1
#install on /home/deployer/nginx

server {
      listen 80;
      server_name www.yourhost.com;
      root /somewhere/public;   # <--- be sure to point to 'public'!
      passenger_enabled on;
   }



## Side ways
## https://www.digitalocean.com/community/articles/how-to-install-ruby-on-rails-on-ubuntu-12-04-lts-precise-pangolin-with-rvm