Linux Shout published a tutorial about installing PostgreSQL 13 on Ubuntu 22.04 LTS Linux.
How to install PostgreSQL 13 on Ubuntu 22.04 LTS Linux
Steps to install the PostgreSQL 13 on Ubuntu 22.04 LTS Jammy JellyFish by adding its repository using the command terminal.
How to install PostgreSQL 13 on Ubuntu 22.04 LTS Linux