bin/shutdown-detect-boot

   1 #! /bin/bash
   2 boot="boot $* boot=$(uptime -s) $(uptime -p)"
   3 echo "$(date --iso=seconds) uninit-time $boot" >>/var/log/shutdown-detect.log
   4 # Raspberry Pi 3B+: 15 sec
   5 sleep 60
   6 echo "$(date --iso=seconds)   init-time $boot" >>/var/log/shutdown-detect.log
   7 if [ -e /var/log/shutdown-detect.ok ];then
   8   rm -f /var/log/shutdown-detect.ok
   9   exit 0
  10 fi
  11 echo "$(date --iso=seconds) unclean shutdown"|tee -a /var/log/shutdown-detect.log|mail -s "unclean shutdown: $(hostname)" jan@jankratochvil.net