Hadoop: Setting up single node Cluster on Linux desktop

Following are the helpful links for setting up Hadoop on Linux

Successfully setup the Hadoop cluster on LINUX desktop.

1. http://www.bogotobogo.com/Hadoop/BigData_hadoop_Install_on_ubuntu_single_node_cluster.php
    http://qursaan-howto.blogspot.com/2014/12/how-to-install-hadoop-as-single-node-on.html

2. Editing read only file in VI editor 
    http://www.geekyboy.com/archives/629

command to save the read only files

:w !sudo tee %
O

3. VI editor commands for editing configuration files
    http://www.cs.rit.edu/~cslab/vi.html
    http://www.cs.colostate.edu/helpdocs/vi.html