pg_controldata — display control information of a PostgreSQL database cluster
pg_controldata [option] [[ -D | --pgdata ]datadir]
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.
-D datadir--pgdata=datadirSpecifies the directory where the database cluster is stored.
-V--versionPrint the pg_controldata version and exit.
-?--helpShow help about pg_controldata command line arguments, and exit.
PGDATADefault data directory location
PG_COLOR
Specifies whether to use color in diagnostic messages. Possible values
are always, auto and
never.