Setup an ubuntu server

server_setup.sh

#!/bin/bash
#First you update your system
sudo apt-get -y update

#install postgresql-9.5
touch /etc/apt/sources.list.d/pgdg.list
echo "deb http://apt.postgresql.org/pub/repos/apt/ trusty-pgdg main" >> /etc/apt/sources.list.d/pgdg.list
wget --quiet -O - https://www.postgresql.org/media/keys/ACCC4CF8.asc | \
  sudo apt-key add -
sudo apt-get update
sudo apt-get install -y postgresql-9.5 nginx git ruby