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# Install Java
sudo apt-get install openjdk-7-jre-headless -y

# Download & install the Public Signing Key
wget -qO - http://packages.elasticsearch.org/GPG-KEY-elasticsearch | sudo apt-key add -

# Add the following to /etc/apt/sources.list
deb http://packages.elasticsearch.org/elasticsearch/1.3/debian stable main

# Update Aptitude
sudo apt-get update

# Install Elasticsearch
sudo apt-get install elasticsearch

# Configure Elasticsearch to run on startup
sudo update-rc.d elasticsearch defaults 95 10

# Start the server now
sudo /etc/init.d/elasticsearch start

# Test whether it's working
curl -X GET localhost:9200