install postgres 11 ubuntu
sudo apt update && sudo apt -y upgrade
wget --quiet -O - https://www.postgresql.org/media/keys/ACCC4CF8.asc | sudo apt-key add -
RELEASE=$(lsb_release -cs)
echo "deb http://apt.postgresql.org/pub/repos/apt/ ${RELEASE}"-pgdg main | sudo tee /etc/apt/sources.list.d/pgdg.list
cat /etc/apt/sources.list.d/pgdg.list
sudo apt update
sudo apt -y install postgresql-11
sudo -u postgres psql
postgres=# CREATE USER wcl WITH PASSWORD 'wclPassword';
postgres=# CREATE DATABASE wcl;
postgres=# ALTER USER wcl WITH SUPERUSER;
postgres=# exit