Linux – How to setup/change the administrator email on linux server

centoscronemaillinux

Supposedly, if you install a cron and the cron job has an output >/dev/null, it will be sent to the system administrator. Is this true? Where does the email get setup? I don't see anything in /etc/mail.rc on this and there is nothing about mail in the crontab either.

Help?

Best Answer

The output will, by default, get sent to whichever user's crontab started the process. If this is the main crontab, then root gets the email.

If you want the mail sent somewhere else, you can either configure your MTA to forward the mail, or set MAILTO from within the crontab to alter the destination. (Use MAILTO="" to suppress mail entirely.)

if you install a cron and the cron job has an output >/dev/null, it will be sent to the system administrator

I believe you meant to say that the job does not have output redirected to /dev/null; if all of the output is written to stdout, and stdout gets sent to /dev/null, then there will be no output to send to anyone.

Related Solutions

Linux Bash – How to Sort du -h Output by Size

As of GNU coreutils 7.5 released in August 2009, sort allows a -h parameter, which allows numeric suffixes of the kind produced by du -h:

du -hs * | sort -h

If you are using a sort that does not support -h, you can install GNU Coreutils. E.g. on an older Mac OS X:

brew install coreutils
du -hs * | gsort -h

From sort manual:

-h, --human-numeric-sort compare human readable numbers (e.g., 2K 1G)

Cron – Sending an email with attachments from the results of a cron job

You could give nail a try. It allows you to specify an attachment.

In your script that generates these files you'd do something like the snippet below to deliver the file as an attachment to an email.

echo "body" | nail -s subject -a example-filename.txt you@example.com

Best Answer

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Linux Bash – How to Sort du -h Output by Size

Cron – Sending an email with attachments from the results of a cron job

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