module GetNodeList
  def get_node_list(filename)
    f = open(filename,"r")
    nodes = []
    f.each { |line| 
      if /.+jp/ =~ line then
        nodes.push(line.chomp) 
      end
    }
    hostname = `hostname`
    mynum = 0
    if /[0-9]+/ =~ hostname then
      mynum = $&.to_i
    end
    nodes = nodes.rotate(mynum)
    return nodes
  end
end