PG_CONTROLDATA(1)       PostgreSQL 9.4.5 Documentation       PG_CONTROLDATA(1)



NAME
       pg_controldata - display control information of a PostgreSQL database
       cluster

SYNOPSIS
       pg_controldata [option] [datadir]

DESCRIPTION
       pg_controldata prints information initialized during initdb, such as
       the catalog version. It also shows information 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. This utility supports the options -V and --version, which print
       the pg_controldata version and exit. It also supports options -?  and
       --help, which output the supported arguments.

ENVIRONMENT
       PGDATA
           Default data directory location



PostgreSQL 9.4.5                     2015                    PG_CONTROLDATA(1)
