if sunzi.to_be_done "install analysers"; then
  echo "deb http://deb.goaccess.io/ $(lsb_release -cs) main" | tee -a /etc/apt/sources.list.d/goaccess.list
  wget -O - http://deb.goaccess.io/gnugpg.key | apt-key add -

  sunzi.mute "apt-get update"

  sunzi.install "goaccess"
  sunzi.install "iotop"
  sunzi.install "sysstat"

  sed -i 's/ENABLED="false"/ENABLED="true"/' /etc/default/sysstat
  /etc/init.d/sysstat restart

  sunzi.done "install analysers"
fi