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Improve documentation of postgres -C option

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Clarify help (s/return/print/), and explain that this option is for
use by other programs, not for user-facing use (it does not print
units).
This commit is contained in:
Peter Eisentraut
2012-06-13 13:41:25 +03:00
parent f871ef74a5
commit c0a6f9c84b
2 changed files with 9 additions and 2 deletions
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9
doc/src/sgml/ref/postgres-ref.sgml
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@ -144,13 +144,20 @@ PostgreSQL documentation
<term><option>-C <replaceable>name</replaceable></option></term>
<listitem>
<para>
Returns the value of a named run-time parameter, and exits.
Prints the value of the named run-time parameter, and exits.
(See the <option>-c</> option above for details.) This can
be used on a running server, and returns values from
<filename>postgresql.conf</>, modified by any parameters
supplied in this invocation. It does not reflect parameters
supplied when the cluster was started.
</para>
<para>
This option is meant for other programs that interact with a server
instance, such as <xref linkend="app-pg-ctl">, to query configuration
parameter values. User-facing applications should instead use <xref
linkend="sql-show"> or the <structname>pg_settings</structname> view.
</para>
</listitem>
</varlistentry>