Temperature by email Topic is solved

[Joulinar]

hmm can you try the following

Code: Select all

0,5,10,15,20,25,30,35,40,45,50,55 * * * * <your script>

maybe */x notation is not understood correctly

If it still seems to be not working after that, change the command to something like:

Code: Select all

0,5,10,15,20,25,30,35,40,45,50,55 * * * * date >>/tmp/debug_cron_pax.txt

[MichaIng]

The */2 notation is interpreted correctly. We use that for implemented minutely timer as well (dietpi-cron > minutely). Have you verified sufficient permissions of the crontab's user to execute the script?

One can also increase cron log level via /etc/default/cron.

[huidbui25]

Code: Select all

0,5,10,15,20,25,30,35,40,45,50,55 * * * * date >>/tmp/debug_cron_pax.txt

That was a good hint and, indeed, it works. It's not the notation, */5 ... works, too: the txt file is being created and a new line added every five minutes. So the problems seems to be related to my script somehow. What would make a script not being run by cronjob?

[huidbui25]

One can also increase cron log level via /etc/default/cron.

I'll try that and see what I find ...

[huidbui25]

Ahh, I'm getting closer. The error is not caused by cron but by the mailing program, it trys to send to the wrong email address. But not sure why. When executing the script manually it works, when exectuted by cron the mailer uses different mail settings and hence fails.

[huidbui25]

Heureka ... more or less I have to add "sudo" to the cronjob line to make it work:

Code: Select all

*/2 * * * * sudo bash /usr/local/bin/temp_mon

I only don't understand the reason why it doesn't work without that "sudo".

[Joulinar]

probably it has something to do with the user environment the cron is executed with.

[huidbui25]

neat..post it up!

Good idea. Done so here. I'm a Linux novice tho.