how to get past answering yes to apt upgrade (not -y switch)

erik2282 · 04-04-2022, 04:44 PM

Ubuntu Server 20.04LTS

Just for testing/curiosity reasons, I setup a crontab:

Code:

0 0 * * SUN apt update && apt upgrade -y && reboot

It doesn't complete because of the prompt below.

This machine runs Ubiquiti's Unifi controller software (for my Wifi) installed. When running apt upgrade, there is a prompt for a question about backups:

Code:

Package configuration


     ┌────────────────────────────┤ Configuring unifi ├─────────────────────────────┐
     │                                                                              │ 
     │ It is recommended that you create a backup before installing a new version.  │ 
     │                                                                              │ 
     │ Do you have a backup?                                                        │ 
     │                                                                              │ 
     │                     <Yes>                        <No>                        │ 
     │                                                                              │ 
     └──────────────────────────────────────────────────────────────────────────────┘

Normally, passing the apt upgrade -y switch is sufficient but not in this case because of the prompt above. Is there a way to bypass or auto answer yes to this during the upgrade. I'll be testing the ubuntu auto unattended-upgrades as well, but was curious about doing it this way.

Questions/Comments?

Thanks
Erik

SlowCoder · 04-04-2022, 07:00 PM

Possibly this will point you in the right direction?
https://serverfault.com/questions/10...onffile-prompt

evo2 · 04-04-2022, 07:31 PM

Hi,

I'm not familiar with that unifi package, but if it is using debconf for that dialogue you may be able to make it non-interactive by changing your debconf settings. Eg

Code:

sudo dpkg-reconfigure debconf

In particular, setting it to ignore everything other than critical questions.

Evo2.