The above document contains :
01) Updating the Ubuntu repository.
02) Installing openjdk-6-jdk.
03) Installing openssh-server.
04) Downloading and installing Hadoop.
05) Configuring Hadoop enveronment.
07) Create a ssh key.
08) Format the name node
09) Start the namenode, datanode
10) Start the task tracker and job tracker.
11) Checking if Hadoop started correctly.
Shanoj 