E: Unable to locate package postgresql-12

Question

I'm using Linux Mint and I'm trying to upgrade PostgreSQL 10 to version 12 through sudo apt-get install postgresql-12, but I see this frequent error:

E: Unable to locate package postgresql-12

So what's wrong? Can you show me why this happens?

Answer 1

PostgreSQL 12 is only available in Linux Mint 20.x (based on Ubuntu 20.04). Linux Mint 21.x (based on Ubuntu 22.04) has PostgreSQL 14, you need to use

sudo apt install postgresql-14

there. Linux Mint 19.x only has PostgreSQL 10.

In any release, you can use

sudo apt install postgresql

to get the default version for that release.