metrics.sh/metrics/swap.sh

#!/bin/sh

if is_osx; then

  collect () {
    echo $(sysctl -n vm.swapusage | awk '{printf "%.1f", $6 / $3 * 100.0}')
  }

else

  collect () {
    echo $(free | awk '/Swap/{printf "%.1f", $3/$2 * 100.0}')
  }

fi

docs () {
  echo "Percentage of used swap space."
}