How to accept EULA unattended for SteamCMD under debian-variants?

Question

I am trying to auto accept in an unattended manner, the STEAMCMD package EULA

As per the following previous answer on this topic

• https://stackoverflow.com/questions/59097393/non-interactive-steam-install-on-linux-debian-how-to-auto-accept-eula
• How can I accept the Lience agreement for steam prior to apt-get install?
• script auto accepting EULA / license agreement
• How to automatically accept the Steam license for steamcmd?
• How to accept steam license when installing steam?
• command to accept VirtualBox PUEL (for virtualbox-ext-pack installation)?
• How can I accept the Microsoft EULA agreement for ttf-mscorefonts-installer?

The best way should be to first get the question and answers using

debconf-show steam

which should output

* steam/question: I AGREE
* steam/license:
* steam/purge:

And then using debconf-set-selections

echo steam steam/license note '' | sudo debconf-set-selections
echo steam steam/question select "I AGREE" | sudo debconf-set-selections

However, it appears this no longer works, example

I have also tried the debconf-set-selections commands above, to no effect

How to install steamcmd in a fully unattended manner ?

Answer 1

After a fresh install I have found out why debcon-show had no output

It will not show until you run apt update after adding the non-free repo

The following commands will install steamcmd without interactive interruption. On a fresh debian 12-based distro.

echo deb http://deb.debian.org/debian/ bookworm non-free >> /etc/apt/sources.list
dpkg --add-architecture i386
echo steam steam/license note '' | debconf-set-selections
echo steam steam/question select "I AGREE" | debconf-set-selections
apt update
apt install steamcmd -y