To add a cron job on an Asuswrt Merlin WiFi router, you will need to access the router's web-based administration interface and navigate to the "Cron" settings page.
Here are the steps to follow to add a cron job on an Asuswrt Merlin WiFi router:
Connect to the router's WiFi network or connect to the router using an Ethernet cable.
Open a web browser and enter the router's IP address in the address bar. The IP address is usually 192.168.1.1 or 192.168.0.1.
Enter the router's login credentials when prompted. These are usually the username "admin" and the password you set when you first set up the router.
Navigate to the "Cron" settings page. This is usually located under the "Advanced Settings" or "Utilities" section of the router's web-based administration interface.
Enter the cron job command and schedule in the appropriate fields. The cron job command is the command you want to run at a specified time, and the schedule is the time at which you want the cron job to run.
Click the "Apply" or "Save" button to save the cron job.
Test the cron job to ensure it is running as expected.
Note: The specific steps and layout of the router's web-based administration interface may vary depending on the router model and firmware version. Consult the router's documentation and online resources for more information on the specific options and features available on your router.