#!/bin/bash
curl -s -X GET "https://nightscout.mgrote.net/api/v1/entries/sgv?count=1&token=polybar-ae6fe2720f2c30f4" > /dev/null
if [ $? -ne 0 ]; then
    echo "---"
else
    curl -s -X GET "https://nightscout.mgrote.net/api/v1/entries/sgv?count=1&token=polybar-ae6fe2720f2c30f4" | awk '{$zw=$3 * 0.0555} {printf "%.1f\n",$zw}'
fi