What is Standard Output (stdout)?
The default output stream where a program writes its normal results and messages.
Definition
Standard output (stdout) is the default channel through which a program sends its primary output data. In shell-based cron jobs, stdout captures the text your script prints during normal execution. By default, traditional cron emails stdout to the crontab owner after each run. In HTTP-based cron services like CronJobPro, the equivalent is the HTTP response body returned by your endpoint.
Simple Analogy
Like the main screen of a vending machine that shows "Your item has been dispensed" — it is the normal, expected communication channel for successful results.
Why It Matters
Stdout is where your job communicates its results. A well-designed endpoint returns meaningful information in its response body: records processed, items synced, or a status summary. CronJobPro captures this response body in execution logs, giving you visibility into what the job actually accomplished.
How to Verify
In CronJobPro, the response body in each execution log is the equivalent of stdout. For shell scripts, redirect stdout to a file: `script.sh > /var/log/my-job.log`. Test your endpoint manually with curl to see what it outputs.
Common Mistakes
Returning empty responses from your endpoint, leaving no record of what happened. Mixing error messages into stdout instead of using stderr (or HTTP error codes). Returning sensitive data in stdout that gets logged.
Best Practices
Have your endpoint return a structured response (JSON is ideal) summarizing what the job accomplished. Include metrics like records processed, duration, and any warnings. Never include passwords, API keys, or personal data in output that will be logged.
Documentation
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Try it free →Frequently Asked Questions
What is Standard Output (stdout)?
Standard output (stdout) is the default channel through which a program sends its primary output data. In shell-based cron jobs, stdout captures the text your script prints during normal execution. By default, traditional cron emails stdout to the crontab owner after each run. In HTTP-based cron services like CronJobPro, the equivalent is the HTTP response body returned by your endpoint.
Why does Standard Output (stdout) matter for cron jobs?
Stdout is where your job communicates its results. A well-designed endpoint returns meaningful information in its response body: records processed, items synced, or a status summary. CronJobPro captures this response body in execution logs, giving you visibility into what the job actually accomplished.
What are best practices for Standard Output (stdout)?
Have your endpoint return a structured response (JSON is ideal) summarizing what the job accomplished. Include metrics like records processed, duration, and any warnings. Never include passwords, API keys, or personal data in output that will be logged.