Install Postgresql 9.5 in Ubuntu 14.04 Trusty Tahr

In August 2015 I successfully install Postgresql 9.5 in Ubuntu 14.04 Trusty Tahr following the instructions from the official Ubuntu page (to which I was led from this article).

Basically I just selected Trusty (14.04) as an option in the drop-down menu as shown in the figure below:

.

…and then (after adding the repository and key) I did:

sudo apt-get update
sudo apt-get install postgresql postgresql-contrib

Doing a:

$ sudo su - postgres
postgres@beorn:~$ psql
psql (9.5.4)
Type "help" for help.