Only email on cron errors for jobs in cron.daily, cron.hourly, etc

Question

I have several cron jobs that run (in /etc/cron.daily, /etc/cron.hourly, /etc/cron.weekly, etc.) and email root@localhost with the results. I'd like to stop those emails if the jobs are succeeding, and only email on error (which I understand can be done by redirecting stdout to /dev/null). I understand how to do that for individual cron jobs, but the scripts in those special directories are run using run-parts. What is the best way to suppress success emails for those scripts?

Answer 1

You should send successful email notifications to /dev/null so they disappear.

But you want to see unsuccessful email notifications.

This means you need to first direct stdout to /dev/null and then direct /dev/stderr to stdout

try changing the redirection part of your cronjobs to

>/dev/null 2>&1

See this link