#!/bin/sh
# This script acts as a dead-man-switch for the door pi.
# It sends a ping to healthchecks.io in regular intervals. 
# When a ping is missed (e.g. because the pi crashes) healtchecks 
# is configured to send a notification that the pi is down.
LOGFILE=/var/log/healthcheck.log
URL=http://hc-ping.com/7cfd6716-ac74-420a-b322-ef8d5746e0fe
while true; do
    echo -n "`date +"[%Y-%m-%d %H:%M:%S]"` " >> $LOGFILE
    wget -q -O - $URL >> $LOGFILE
    echo "" >> $LOGFILE
    sleep 15m 
done