How to install postgres on ubuntu without terminal prompts

Question

I'm trying to get postgres to install on ubuntu xenial by automating the process entirely. I expected it would go smoothly like any other apt-get, but in the middle it asks me to configure where I'm from (region and city). However, I want it to get done without me actually having to type in more than the initial command. What I'm using so far is:

apt-get install -y postgresql

basically, I need it to input two values when the installation asks: 8 for region and 61 for city.

Since my knowledge of terminal commands is weak, I'd appreciate either simple and/or thoroughly explained suggestions

Answer 1

Set the DEBIAN_FRONTEND environment variable to noninteractive. E.g., here's how to do it scoping to just the postgresql installation command:

DEBIAN_FRONTEND=noninteractive apt install -y postgresql