> In old versions of PostgreSQL, we could see the database names in the
> pgsql/data/base directory, perhaps in this version, we cant see the
> database names, we see numbers that represents the databases. I would
> like to know how can I do to appear the databases names instead of
> numbers.
You should not be touching any files used by postgresql, except
pg_hba.conf. If you want a list of all available databases perform this
command from the command line:
psql -h localhost -U postgres template1 -q -c "\l"