I'm using Ubuntu 14.04. I'm trying to download postgresql using this guide.
But when I run the command sudo apt-get install postgresql-9.4
in my terminal, I get this error message:
E: Unable to locate package postgresql-9.4
E: Couldn't find any package by regex 'postgresql-9.4'
What am I doing wrong?
apt-cache policy postgresql
sudo apt-get update && sudo apt-get upgrade
before installing.