gistfile1.txt

<snip>
....
....
      {
        :name=>'step3',
        :script_bootstrap_action => {:path=>'s3n://elasticmapreduce/bootstrap-actions/run-if',
                                     :args=>['instance.isMaster=false','s3n://my_coolio_bucket/bootstrap-actions/copy_to_slave_nodes.sh']}        
      },
....
....
<snip>