Cannot change user crontab

I need to change an user crontab so I tried to change with the command

Quote

crontab -e

from the user shell but the result was not the expected because the cron job did not change remaining the same as before.

I tried to find where this cron job was saved but I did not find.

What is wrong?

Thanks for all replies.

Quote from ryecoaaron

OMV doesn't use crontab. crontab -e is the proper way to edit a user's crontab. If you want to edit it as root, you can: crontab -u username -e

So what is the best way to remove the old crontab I cannot find?

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Openmediavault 7.7.9-1 | 64 bit | 6.12.27+bpo-amd64

Quote from ryecoaaron

How can you not find it? A crontab is not really a file and cannot exist for a user that doesn't exist. Are you sure it isn't in /etc/cron.d/?

Yes, I am sure I cannot find the relevant file in any directory related to cron, e.g. /etc/cron.d and other.

I think that this crontab job as mine it is located somewhere like openmediavault db or something similar.

Consider that my installation is really old but it is regularly updated to the last stable version.

P.S.: sorry for the delay of this reply and thanks a lot for your help!

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Openmediavault 7.7.9-1 | 64 bit | 6.12.27+bpo-amd

Found the problem: the cron job was for a user, not a system job and the user was unable (don't know why) to modifiy that job but using the command crontab -u user -e I managed to change that job!

Thanks a lot for the help!