Building a Cron Job Scheduler in Express with Node Cron

What is a CRON job? A cron job is a scheduled task that runs automatically at a specified time. It's commonly used to automate repetitive tasks without manual intervention. Real-world example: Generating daily sales reports 1. Write a script to: - Retrieve sales data from the database - Generate a formatted report - Send the report via email - Save a copy on the server 2. Set up a cron job to execute the script every morning at 6:00 AM: - Edit the crontab file: `crontab -e` - Add the line: `0 6

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