While fixing the gui for pg_dump and pg_restore, I painfully noticed
there's no option for the password.
After some tests, I found that using the PGPASSWORD environment variable
will do the job. I'm a bit irritated that it's marked "deprecated" in
the docs, the .pgpass solution isn't a good one for tool managed passwords.
Hopefully PGPASSWORD won't vanish until there's another solution to
execute pgsql client tools...
Regards,
Andreas