Knowledgebase

Using Cron Jobs in cPanel (Firstserv Guide)

Cron is a built-in Linux task scheduler that allows you to automate tasks on your server. It’s highly flexible and can run scripts, commands, or processes at set intervals.

Firstserv provides an easy way to manage cron jobs via cPanel, without needing to work directly with system files.

Accessing Cron Jobs

1. Log in to cPanel
2. Navigate to:

   Advanced → Cron Jobs
   

Cron Email Notifications

By default, cron output is sent to your account’s main email address.

Change Notification Email

1. In the Cron Jobs page, locate the email section at the top
2. Enter your preferred email address
3. Click Update Email

✅ Useful for monitoring job output or errors

Adding a Cron Job

Step 1: Set the Schedule

You can choose:

• ✅ Common Settings (e.g. once per day, every 5 minutes)
• ✅ Or set custom values for:
  • Minute
  • Hour
  • Day
  • Month
  • Weekday

Step 2: Add the Command

Cron jobs run commands in the format:

<executable> <options> <script path>

Example: Running a PHP Script

Breakdown:

• /usr/bin/php → PHP executable
• -q → Quiet mode (suppresses output)
• /home/username/... → Full path to your script

Step 3: Save

• Click Add New Cron Job

✅ Your task will now run automatically based on your schedule

Managing Existing Cron Jobs

Edit a Cron Job

• Scroll to Current Cron Jobs
• Click Edit
• Update schedule or command
• Click Edit Line to save

Delete a Cron Job

• Click Delete next to the job
• Confirm deletion

✅ This stops the task from running

Common Examples

Trigger WordPress Cron (wp-cron.php)

Explanation:

• wget fetches the URL
• -O /dev/null discards output

Run a Script Directly

Requirements for Executable Scripts

Your script must:

• ✅ Include a valid shebang at the top:

• ✅ Have correct permissions:

Understanding Output Redirection

This tells the system:

• > → Redirect output
• /dev/null → Discard output (“black hole”)
• 2>&1 → Send errors to the same place

✅ Prevents emails being sent for every cron execution

Best Practices

• ✅ Always use full file paths
• ✅ Test your command manually before scheduling
• ✅ Use output redirection to avoid unnecessary emails
• ✅ Keep schedules reasonable (avoid overloading resources)

Using Cron Without cPanel

If you're using a VPS or dedicated server without cPanel:

• Cron jobs can be configured manually using:

  crontab -e
  

• Consult your system administrator if needed

Summary

• Cron jobs automate tasks on your hosting account
• Configure them easily via cPanel → Cron Jobs
• Set schedules and commands to run scripts automatically
• Use output redirection to keep logs clean
• Edit or remove jobs at any time

Need Help?

If you need assistance setting up or troubleshooting cron jobs, the Firstserv support team is always happy to help.