#Initial Setup

sudo apt-get -y update
sudo apt-get -y upgrade
sudo apt-get -y install git curl python g++ make screen default-jre vim

Ubuntu version before 12.10:

sudo apt-get install -y python-software-properties

Ubuntu version from 12.10:

sudo apt-get install -y software-properties-common

sudo add-apt-repository -y ppa:chris-lea/node.js
sudo apt-get update
sudo apt-get -y install nodejs

#Get Logstash

cd ~/
wget "https://download.elasticsearch.org/logstash/logstash/logstash-1.2.2-flatjar.jar"

To test logstash is working :)

java -jar ~/logstash-1.2.2-flatjar.jar agent -f /vagrant/config/logstash/basic.conf

Then paste

{"hello": "world"}

You should hopefully see some output where hello is a property under "line", for more information read ./config/logstash/basic.conf