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All Postgres commands that are executed
directly from a Unix shell are
found in the directory .../bin. Including this directory in
your search path will make executing the commands easier.
A collection of system catalogs exist at each site. These include a
class (pg_user) that contains an instance for each valid
Postgres user. The instance specifies a set of
Postgres privileges, such as
the ability to act as Postgres super-user,
the ability to create/destroy
databases, and the ability to update the system catalogs. A Unix
user cannot do anything with Postgres
until an appropriate instance is
installed in this class. Further information on the system catalogs
is available by running queries on the appropriate classes.
