redhat man page for pg_controldata

PG_CONTROLDATA(1)					  PostgreSQL Server Applications					 PG_CONTROLDATA(1)

NAME
       pg_controldata - display server-wide control information

SYNOPSIS
       pg_controldata [ datadir ]

DESCRIPTION
       pg_controldata  returns	information  initialized  during initdb, such as the catalog version and server locale.  It also shows information
       about write-ahead logging and checkpoint processing. This information is server-wide, and not specific to any one database.

       This utility may only be run by the user who installed the server because it requires read access to the datadir.  You can specify the data
       directory on the command line, or use the environment variable PGDATA.

ENVIRONMENT
       PGDATA Default data directory location

Application							    2002-11-22							 PG_CONTROLDATA(1)