DDNS update is performed from the script duck.sh:
chmod 700 duck.sh
Open the crontab editor
cron process runs the script at 5 minute intervals
*/5 * * * * ~/duckdns/duck.sh >/dev/null 2>&1
restart the cron service:
sudo service cron start
Can I expect that @startup: the Raspbian device will execute the duck.sh cron job at boot? Or are other steps necessary to ensure that the cron job is activated on @reboot?
pgrep (or any other command) verify that the cron job is active?