pg_controldata - display control information of a PostgreSQL database cluster
prints information initialized during
, 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
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
. This utility supports the options
, which print the
version and exit. It also
, which output the
Default data directory location