# notify webhook of reboot @reboot bash /usr/share/customscripts/ifnet "/usr/share/customscripts/webhook bootup" # set the system time from the RTC every reboot @reboot /usr/sbin/hwclock -s 2>> /var/log/root-crontab.log # set the RTC from the system time every four hours 0 */4 * * * /usr/sbin/hwclock -w 2>> /var/log/root-crontab.log