Install ElasticSearch on Ubuntu 12.04

es.sh

cd ~
sudo apt-get update
sudo apt-get install openjdk-7-jre lvm2 mdadm -y

wget https://github.com/downloads/elasticsearch/elasticsearch/elasticsearch-0.19.11.tar.gz -O elasticsearch.tar.gz
tar -xf elasticsearch.tar.gz
rm elasticsearch.tar.gz
sudo mv elasticsearch-* elasticsearch
sudo mv elasticsearch /usr/local/share

curl -L http://github.com/elasticsearch/elasticsearch-servicewrapper/tarball/master | tar -xz
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 service elasticsearch start
#curl http://localhost:9200

Amended to use latest elasticsearch and install lvm2 and mdadm packages