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PG_CONTROLDATA(1)       PostgreSQL Server Applications       PG_CONTROLDATA(1)

       pg_controldata - display control information of a PostgreSQL database cluster

       pg_controldata [ datadir ]

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

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

       PGDATA Default data directory location

Application                       2014-02-17                 PG_CONTROLDATA(1)