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diff --git a/publishTemperature.sh b/publishTemperature.sh
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+#!/bin/bash
+# Extract raspi GPU/CPU temperatures and publish them on MQTT
+# SJP 9 Jan 2018
+# Designed to be called from a timer service.
+#
+cpuTemp=echo "scale=1; $(cat /sys/class/thermal/thermal_zone0/temp)/1000" | bc
+
+mosquitto_pub -h stan -t stan/test/cpu/${cpuTemp}
+