How to export from postgres?

Question

PostgreSQL

Can't dump database. In PhpPgAdmin, it gives an empty file, and pg_dump requires a password from the postgres user!
CentOS, cPanel

Answer 1

AND?

sudo su postgres
pg_dump ....

And again, from which user the database was created (who has the rights to it)?
pg_dump quite allows you to specify the user, password, database