es.sh

cd ~
sudo apt-get update
sudo apt-get install curl python-software-properties -y
sudo apt-get install openjdk-6-jre-headless

curl -L http://download.elasticsearch.org/elasticsearch/elasticsearch/elasticsearch-0.20.2.tar.gz | tar -xz
sudo mv elasticsearch-* /usr/local/share/elasticsearch
curl -L http://github.com/elasticsearch/elasticsearch-servicewrapper/tarball/master | tar -xz
sudo mv *servicewrapper*/service /usr/local/share/elasticsearch/bin/
rm -Rf *servicewrapper*
sudo /usr/local/share/elasticsearch/bin/service/elasticsearch install
sudo ln -s `readlink -f /usr/local/share/elasticsearch/bin/service/elasticsearch` /usr/local/bin/rcelasticsearch
sudo /etc/init.d/elasticsearch start

curl http://localhost:9200 

Downloading from github is not possible anymore ; replace with
curl -L http://download.elasticsearch.org/elasticsearch/elasticsearch/elasticsearch-0.20.2.tar.gz | tar -xz