To address disk usage issues on your website based on the provided policy, follow these organized steps:

1. Media Files:

   • Consider storing images and videos on file-sharing servers if possible. Check with your hosting provider for options or features they offer for media storage.

2. Core Dump Files:

   • Use the provided cron job command to automatically delete core dump files:

     rm -f $(find ${HOME} | grep /core.[0-9]*$) >/dev/null 2>&1
     

   • Before executing, ensure you understand each part of the command and test it in a safe environment.

3. Non-Delivery Reports:

   • Delete email files using the cron jobs provided:

     rm -fv /home/cPanel_username/mail/new/*
     rm -fv /home/cPanel_username/mail/cur/*
     

   • Replace cPanel_username with your actual cPanel username. Ensure this is done safely, possibly after backing up important data.

4. Cached Files:

   • Use a single caching plugin and flush cached data regularly. Check the plugin documentation for flushing instructions or settings to automate cache clearing.

5. Data Backup:

   • Before any deletions, create a backup of your website using cPanel's backup tool. Ensure you know how to restore from backups in case of issues.

6. Automated Solutions:

   • Explore setting up regular maintenance scripts or monitoring tools for automated management of these files and cache flushing.

7. Seek Assistance:

   • If unsure about executing commands, consider reaching out to technical support or a more experienced person to guide you safely.