how to create cron backup on Ubuntu linux

it does not work as expected. it works okay if I manually run the shell script

TL;DR

User is asking for help on creating a cron backup on Ubuntu Linux. They mention that Linux by default sends an email when a cron job is completed, and asks about postfix. Another user suggests using grep to search in the logs, specifically "/var/log/syslog". The user mentions that they have not seen anything in the logs and that no backup folder has been created after waiting for two days. They also mention that the cron job works fine when manually run. There is no solution provided in the thread.

Are you sure the cron expression is written correctly?

what do you mean by here

any problem

I took a look. Seems correct 👀

yeah.

Do you get any errors or something?

not at all. seem it is not triggered anything.

i waited two days, no backup folder created

Yes, but do you have something in logs?

how to check bro

From what I'm seeing you should have It logged in /var/log/syslog

You can search in logs with gprep: grep CRON /var/log/syslog

@D5

Interesting. But from what I understand that should not affect execution, but result 🤔

😂 i expect to

I'm not very expert with OS sincerely, but from what I'm seeing in Google, It seems you need to install postfix. But not sure if that would solve the issue at all

postfix ?

what is it and does it do

Email handling. Seems Linux by default sends an email when a Cron job is completed

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