capistrano to configure ntp to brisbane

configuration.rb

  desc "Configure the time zone to Australia/Brisbane"
  task :timezone, :roles => [:tempest_node, :ws_node, :grid_nodes] do
    sudo "apt-get -qy install ntp"
    sudo "rm -f /etc/localtime"
    sudo "ln -s /usr/share/zoneinfo/Australia/Brisbane /etc/localtime"
    sudo "sed -i \"`grep -n ^server /etc/ntp.conf | head -n 1 | awk -F : '{print $1}'` i\\server pool.ntp.org\" /etc/ntp.conf"
    sudo "/etc/init.d/ntp restart"
  end