如果你想在某个温度下关闭树莓,那么你就来对地方了。我有一个脚本,通过Crontab检查CPU温度。
#!/bin/sh
# This script reads the Broadcom SoC temperature value and shuts down if it
# exceeds a particular value.
# 80ºC is the maximum allowed for a Raspberry Pi.
# Get the reading from the sensor and strip the non-number parts
SENSOR="`/opt/vc/bin/vcgencmd measure_temp | cut -d "=" -f2 | cut -d "'" -f1`"
# -gt only deals with whole numbers, so round it.
TEMP="`/usr/bin/printf "%.0f\n" ${SENSOR}`"
# How hot will we allow the SoC to get?
MAX="78"
if [ "${TEMP}" -gt "${MAX}" ] ; then
# This will be mailed to root if called from cron
echo "${TEMP}ºC is too hot!"
# Send a message to syslog
/usr/bin/logger "Shutting down due to SoC temp ${TEMP}."
# Halt the box
/sbin/shutdown -h now
else
echo "${TEMP}ºC ok!"
exit 0
fi
该脚本需要以下权限。
$ chmod 775 /usr/local/bin/checkTemp.sh
*/5 * * * * /usr/bin/sudo -H /usr/local/bin/checkTemp.sh >> /dev/null 2>&1