How to make a dump if we do not know the name of the base, but want to dump everything one by one?

Question

PostgreSQL

Here is the almost finished code, how to modify it to solve the dump task, and the dump should be saved in the custom format:
#!/bin/bash

set -e
set -u
set -o pipefail

pathToConf="$dir/conf_${currentDate} ”
user=“postgres”
database=“db”

mkdir $pathToConf
cp /var/postgres/11/data/pg_hba.conf $pathToConf
cp /var/postgres/11/data/postgresql.conf $pathToConf

pg_dump -h 127.0.0.1 -d db -U ${user} -F c -f dump.tar.gz

Answer 1

select datname from pg_database where datallowconn and datname != 'template0'

Like pg_dumpall