Check a url for changes every x second

checkchange.sh

filename1="out.html"
filename2="tmp.html"

while true
do 
	curl -L 'https://blah' > "$filename1"

	m1=($(md5sum "$filename1"))
	m2=($(md5sum "$filename2"))
	echo "$m1 & $m2"
	if [ "$m1" != "$m2" ] ; then
		echo "ERROR: File has changed!" >&2
		espeak "Found an open position in the queue." 
		diff  "$filename1" "$filename2"
		cp "$filename1" "$filename2"
		exit 1
		
	fi
	

	sleep 60
done