Correct pg_dumpall Syntax

I do not see an option on the man page for pg_dumpall that directs it to
the data of a different version on a different filesystem. I would greatly
appreciate learning the correct syntax that will allow me to use the
pg_dumpall from 8.3.3 to extract all data from the 8.1.4 version residing in
/usr4/pgsql_old/data/ and write it to a file (with the -f option) in
/usr4/postgres-backups.

There are no postmaster or postgres processes running.

Thanks,

Rich

--
Richard B. Shepard, Ph.D. | Integrity Credibility
Applied Ecosystem Services, Inc. | Innovation
<http://www.appl-ecosys.com> Voice: 503-667-4517 Fax: 503-667-8863