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+'\" t
+.\"     Title: pg_controldata
+.\"    Author: The PostgreSQL Global Development Group
+.\" Generator: DocBook XSL Stylesheets vsnapshot <http://docbook.sf.net/>
+.\"      Date: 2023
+.\"    Manual: PostgreSQL 15.5 Documentation
+.\"    Source: PostgreSQL 15.5
+.\"  Language: English
+.\"
+.TH "PG_CONTROLDATA" "1" "2023" "PostgreSQL 15.5" "PostgreSQL 15.5 Documentation"
+.\" -----------------------------------------------------------------
+.\" * Define some portability stuff
+.\" -----------------------------------------------------------------
+.\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+.\" http://bugs.debian.org/507673
+.\" http://lists.gnu.org/archive/html/groff/2009-02/msg00013.html
+.\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+.ie \n(.g .ds Aq \(aq
+.el       .ds Aq '
+.\" -----------------------------------------------------------------
+.\" * set default formatting
+.\" -----------------------------------------------------------------
+.\" disable hyphenation
+.nh
+.\" disable justification (adjust text to left margin only)
+.ad l
+.\" -----------------------------------------------------------------
+.\" * MAIN CONTENT STARTS HERE *
+.\" -----------------------------------------------------------------
+.SH "NAME"
+pg_controldata \- display control information of a PostgreSQL database cluster
+.SH "SYNOPSIS"
+.HP \w'\fBpg_controldata\fR\ 'u
+\fBpg_controldata\fR [\fIoption\fR] [[\fB\-D\fR | \fB\-\-pgdata\fR]\fIdatadir\fR]
+.SH "DESCRIPTION"
+.PP
+\fBpg_controldata\fR
+prints information initialized during
+\fBinitdb\fR, 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\&.
+.PP
+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
+\fBPGDATA\fR\&. This utility supports the options
+\fB\-V\fR
+and
+\fB\-\-version\fR, which print the
+pg_controldata
+version and exit\&. It also supports options
+\fB\-?\fR
+and
+\fB\-\-help\fR, which output the supported arguments\&.
+.SH "ENVIRONMENT"
+.PP
+\fBPGDATA\fR
+.RS 4
+Default data directory location
+.RE
+.PP
+\fBPG_COLOR\fR
+.RS 4
+Specifies whether to use color in diagnostic messages\&. Possible values are
+always,
+auto
+and
+never\&.
+.RE