Install only Postgres client 11 on Ubuntu 18.04

If you intend to only install Postgres 11 client for Ubuntu, mainly for pg_dump and pg_restore commands, follow the steps below.

sudo apt install postgresql-client-common

sudo apt-get install curl ca-certificates gnupg
curl https://www.postgresql.org/media/keys/ACCC4CF8.asc | sudo apt-key add -
sudo sh -c 'echo "deb http://apt.postgresql.org/pub/repos/apt $(lsb_release -cs)-pgdg main" > /etc/apt/sources.list.d/pgdg.list'
sudo apt-get update
sudo apt install postgresql-client-11
pg_basebackup -V

pg_dump --version