How to Install PostgreSQL on Ubuntu 26.04

To install PostgreSQL on Ubuntu 26.04, use the distro package (PostgreSQL 18).

Step 1 : Update.

sudo apt update

Step 2 : Install PostgreSQL.

sudo apt install postgresql postgresql-contrib

Step 3 : Start and enable.

sudo systemctl start postgresql
sudo systemctl enable postgresql

Step 4 : Check status.

sudo systemctl status postgresql

Step 5 : Open psql as the postgres user.

sudo -u postgres psql

Step 6 : Create a user and database (change the password).

CREATE USER alice WITH PASSWORD 'strong_password';
CREATE DATABASE appdb OWNER alice;

You have installed PostgreSQL on Ubuntu 26.04.