# notify webhook of reboot @reboot /bin/bash -c "/usr/share/customscripts/ifnet \"/usr/share/customscripts/webhook bootup\" 2>> /var/log/root-crontab.log" # 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