Wiki: https://en.wikipedia.org/wiki/Cron

Use of Cron in UltimatePOS

Cron Jobs are used for the following purposes:

• 1. Automatic Backup: If you want to automate the backup process to take place every day.
• 2. Subscription invoice: If you use a recurring invoice or subscription invoice feature in kokabookspos.
• 3. WooCommerce Module: Used in WooCommerce module only if you want to enable auto-synchronization of orders from WooCommerce to UltimatePOS.
• 4. Superadmin Module Notify the user when the subscription gets expired.

Any other features as mentioned throughout the documentation.

Setting up a cron job

Cron Jobs are used for the following purposes:

• 1. You will find cron job command in Administrator Backup screen(available since V2.13)
• or WooCommerce module API settings or Superadmin Cron Jobs Menu.
• It will be in this format:
• * * * * * php /path_to_pos_folder schedule:run >> /dev/null 2>&1
• 2. Login into your Cpanel or direct admin or similar server management portal and Go into Cron Jobs or scheduler menu.
• 3. In the “Add New Cron Job” section, select:
• minutes = *
• Hour = *
• Day = *
• Month = *
• Weekday = *
• Command = php /path_to_pos_folder schedule:run >> /dev/null 2>&1 The command is same as the command displayed above except removing all the * before it.
• 4. Click “Add New Cron Job” Button and it will be added.
• NOTE: only one cron job is required for all features, don’t add it multiple times.
• NOTE: The cron command will be found in Superadmin settings, Woocommerce settings and Administer Backup page.

Setting cronjob interval in the code:

Follow the file path in the codebase

pos\Modules\Woocommerce\Providers\WoocommerceServiceProvider.php

Search for the line twiceDaily(1, 13) and change it as per required.

Refer to the laravel official document below.

https://laravel.com/docs/9.x/scheduling#schedule-frequency-options

If you’re not using woocommerce module, follow this path pos\app\Console\Kernel.php.

Cron job errors & Fixes:

ArgvInput.php ‘Invalid argument supplied for foreach()’

To fix this error, go to edit php.ini and enable/turn-on register_argc_argv ini settings. And it will start to work fine.