Okay I have a perl script that checks the status of a dynamic ip address on my home network. If the address is changed, it makes a few changes in a couple of files and sends an email off to my work email. The script works fine when I run it from the command line directly, the files are changed, and the email is sent. The problem happens when I schedule it as a cron job. The script runs, the files are changed, but the email never gets sent. I run the job under root. There doesn't seem to be an error, because I don't get an email in my root mail box, but I also don't get an email in my work box.

Any ideas?

I am using
RH 9
Sendmail 8.12
I schedule the job through KCron

Each time I have a "works in the shell, but not from cron" problem, I find that there is some difference in the env. settings that causes it. Add a printenv to the cron script and -v to the shell and compare the printenv output to what you have interactively. cron is not a login shell.

Hope it helps,
m

Right on the head.
The Cron PATH variable didn't include /usr/sbin/ where sendmail is, so I made some changes to my script and voila.

Thanks, I'm still new at this linux stuff.
It has taken me two whole days to figure this out!

tc

Wow - this posting on sendmail and cronjobs is still helpful after 8 years
Thanks!

After 10 years!

Guess what, lol! Thanks again.

Great, works for me too.

Good to know that not that much has changed in Linux in years, isn't it?

Thank you!!! 12 Years

after 12 years, this still works. Thanks!

Well, 2020, and it solves the problem.

Using /usr/sbin/sendmail works like a charm.

I tried many solutions but none of them worked. I am using the below code in my crontabs. Not sure what I'm doing wrong but email is still not sending. However, when I open the webpage in the browser then I'm receiving the emails. Thank you!

PATH=/usr/sbin/sendmail
*/5 * * * * php /var/www/html/order-management/abc.php
*/15 * * * * php /var/www/html/order-management/def.php
*/5 * * * * php /var/www/html/order-management/email.php

My first two cronjobs are working fine where I'm inserting data inside the database. However, the last isn't where I'm sending email using sendmail

PATH consists of directories!
Or per command

Thank you for your update. This is one of the first solution I'd already tried but didn't work.

Do you have any other solution? Just FYI, I am using Amazon Linux 2. Thanks!

This is the reason that it is strongly suggested that full paths to commands are used in scripts. It helps avoid $PATH issues.