Hello.
I'm not a proficient shell script writer, so I would like advice
and criticism for my sensorsd(8) temperature script.
In particular, I would like the "above" email to root to include helpful
information that would help explain why the temperature went to critical.
Anything else that I may be missing would be nice to know too, including
scripting style.
$ cat /etc/sensorsd/temp.sh
#!/bin/sh
case $1 in
"below")
# Normal operation.
apm -A
;;
"within")
# We hit the warning threshold. Step down the CPU.
apm -L
# Write the warning to syslog, so we know why the CPU was stepped
down.
logger -t "$0" "Reached warning temperature. Stepping down CPU."
# Tell root.
echo "Stepping down CPU due to high temperature" | mail -s "$0"
root@`hostname`
# Tell users:
echo "Stepping down CPU due to high temperature" | wall
;;
"above")
# Mail message for root, with hopefully helpful information.
message="
The system was shut down due to excessive temperature.
The system hardware may need maintenance.
System information:
`date`
`uptime`
`who -u`
`sysctl hw.sensors`
`sysctl hw.cpuspeed`
`sysctl hw.setperf`
`ps auxw`
"
# Mail root.
echo "$message" | mail -s "$0" root@`hostname`
# Halt and power down.
shutdown -h -p now "Reached critical temperature. Halting system
from $0"
;;
esac
