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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <HTML ><HEAD ><TITLE >Short Options</TITLE ><META NAME="GENERATOR" CONTENT="Modular DocBook HTML Stylesheet Version 1.79"><LINK REV="MADE" HREF="mailto:pgsql-docs@postgresql.org"><LINK REL="HOME" TITLE="PostgreSQL 9.2.24 Documentation" HREF="index.html"><LINK REL="UP" TITLE="Server Configuration" HREF="runtime-config.html"><LINK REL="PREVIOUS" TITLE="Developer Options" HREF="runtime-config-developer.html"><LINK REL="NEXT" TITLE="Client Authentication" HREF="client-authentication.html"><LINK REL="STYLESHEET" TYPE="text/css" HREF="stylesheet.css"><META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=ISO-8859-1"><META NAME="creation" CONTENT="2017-11-06T22:43:11"></HEAD ><BODY CLASS="SECT1" ><DIV CLASS="NAVHEADER" ><TABLE SUMMARY="Header navigation table" WIDTH="100%" BORDER="0" CELLPADDING="0" CELLSPACING="0" ><TR ><TH COLSPAN="5" ALIGN="center" VALIGN="bottom" ><A HREF="index.html" >PostgreSQL 9.2.24 Documentation</A ></TH ></TR ><TR ><TD WIDTH="10%" ALIGN="left" VALIGN="top" ><A TITLE="Developer Options" HREF="runtime-config-developer.html" ACCESSKEY="P" >Prev</A ></TD ><TD WIDTH="10%" ALIGN="left" VALIGN="top" ><A HREF="runtime-config.html" ACCESSKEY="U" >Up</A ></TD ><TD WIDTH="60%" ALIGN="center" VALIGN="bottom" >Chapter 18. Server Configuration</TD ><TD WIDTH="20%" ALIGN="right" VALIGN="top" ><A TITLE="Client Authentication" HREF="client-authentication.html" ACCESSKEY="N" >Next</A ></TD ></TR ></TABLE ><HR ALIGN="LEFT" WIDTH="100%"></DIV ><DIV CLASS="SECT1" ><H1 CLASS="SECT1" ><A NAME="RUNTIME-CONFIG-SHORT" >18.18. Short Options</A ></H1 ><P > For convenience there are also single letter command-line option switches available for some parameters. They are described in <A HREF="runtime-config-short.html#RUNTIME-CONFIG-SHORT-TABLE" >Table 18-2</A >. Some of these options exist for historical reasons, and their presence as a single-letter option does not necessarily indicate an endorsement to use the option heavily. </P ><DIV CLASS="TABLE" ><A NAME="RUNTIME-CONFIG-SHORT-TABLE" ></A ><P ><B >Table 18-2. Short Option Key</B ></P ><TABLE BORDER="1" CLASS="CALSTABLE" ><COL><COL><THEAD ><TR ><TH >Short Option</TH ><TH >Equivalent</TH ></TR ></THEAD ><TBODY ><TR ><TD ><TT CLASS="OPTION" >-A <TT CLASS="REPLACEABLE" ><I >x</I ></TT ></TT ></TD ><TD ><TT CLASS="LITERAL" >debug_assertions = <TT CLASS="REPLACEABLE" ><I >x</I ></TT ></TT ></TD ></TR ><TR ><TD ><TT CLASS="OPTION" >-B <TT CLASS="REPLACEABLE" ><I >x</I ></TT ></TT ></TD ><TD ><TT CLASS="LITERAL" >shared_buffers = <TT CLASS="REPLACEABLE" ><I >x</I ></TT ></TT ></TD ></TR ><TR ><TD ><TT CLASS="OPTION" >-d <TT CLASS="REPLACEABLE" ><I >x</I ></TT ></TT ></TD ><TD ><TT CLASS="LITERAL" >log_min_messages = DEBUG<TT CLASS="REPLACEABLE" ><I >x</I ></TT ></TT ></TD ></TR ><TR ><TD ><TT CLASS="OPTION" >-e</TT ></TD ><TD ><TT CLASS="LITERAL" >datestyle = euro</TT ></TD ></TR ><TR ><TD > <TT CLASS="OPTION" >-fb</TT >, <TT CLASS="OPTION" >-fh</TT >, <TT CLASS="OPTION" >-fi</TT >, <TT CLASS="OPTION" >-fm</TT >, <TT CLASS="OPTION" >-fn</TT >, <TT CLASS="OPTION" >-fo</TT >, <TT CLASS="OPTION" >-fs</TT >, <TT CLASS="OPTION" >-ft</TT > </TD ><TD > <TT CLASS="LITERAL" >enable_bitmapscan = off</TT >, <TT CLASS="LITERAL" >enable_hashjoin = off</TT >, <TT CLASS="LITERAL" >enable_indexscan = off</TT >, <TT CLASS="LITERAL" >enable_mergejoin = off</TT >, <TT CLASS="LITERAL" >enable_nestloop = off</TT >, <TT CLASS="LITERAL" >enable_indexonlyscan = off</TT >, <TT CLASS="LITERAL" >enable_seqscan = off</TT >, <TT CLASS="LITERAL" >enable_tidscan = off</TT > </TD ></TR ><TR ><TD ><TT CLASS="OPTION" >-F</TT ></TD ><TD ><TT CLASS="LITERAL" >fsync = off</TT ></TD ></TR ><TR ><TD ><TT CLASS="OPTION" >-h <TT CLASS="REPLACEABLE" ><I >x</I ></TT ></TT ></TD ><TD ><TT CLASS="LITERAL" >listen_addresses = <TT CLASS="REPLACEABLE" ><I >x</I ></TT ></TT ></TD ></TR ><TR ><TD ><TT CLASS="OPTION" >-i</TT ></TD ><TD ><TT CLASS="LITERAL" >listen_addresses = '*'</TT ></TD ></TR ><TR ><TD ><TT CLASS="OPTION" >-k <TT CLASS="REPLACEABLE" ><I >x</I ></TT ></TT ></TD ><TD ><TT CLASS="LITERAL" >unix_socket_directories = <TT CLASS="REPLACEABLE" ><I >x</I ></TT ></TT ></TD ></TR ><TR ><TD ><TT CLASS="OPTION" >-l</TT ></TD ><TD ><TT CLASS="LITERAL" >ssl = on</TT ></TD ></TR ><TR ><TD ><TT CLASS="OPTION" >-N <TT CLASS="REPLACEABLE" ><I >x</I ></TT ></TT ></TD ><TD ><TT CLASS="LITERAL" >max_connections = <TT CLASS="REPLACEABLE" ><I >x</I ></TT ></TT ></TD ></TR ><TR ><TD ><TT CLASS="OPTION" >-O</TT ></TD ><TD ><TT CLASS="LITERAL" >allow_system_table_mods = on</TT ></TD ></TR ><TR ><TD ><TT CLASS="OPTION" >-p <TT CLASS="REPLACEABLE" ><I >x</I ></TT ></TT ></TD ><TD ><TT CLASS="LITERAL" >port = <TT CLASS="REPLACEABLE" ><I >x</I ></TT ></TT ></TD ></TR ><TR ><TD ><TT CLASS="OPTION" >-P</TT ></TD ><TD ><TT CLASS="LITERAL" >ignore_system_indexes = on</TT ></TD ></TR ><TR ><TD ><TT CLASS="OPTION" >-s</TT ></TD ><TD ><TT CLASS="LITERAL" >log_statement_stats = on</TT ></TD ></TR ><TR ><TD ><TT CLASS="OPTION" >-S <TT CLASS="REPLACEABLE" ><I >x</I ></TT ></TT ></TD ><TD ><TT CLASS="LITERAL" >work_mem = <TT CLASS="REPLACEABLE" ><I >x</I ></TT ></TT ></TD ></TR ><TR ><TD ><TT CLASS="OPTION" >-tpa</TT >, <TT CLASS="OPTION" >-tpl</TT >, <TT CLASS="OPTION" >-te</TT ></TD ><TD ><TT CLASS="LITERAL" >log_parser_stats = on</TT >, <TT CLASS="LITERAL" >log_planner_stats = on</TT >, <TT CLASS="LITERAL" >log_executor_stats = on</TT ></TD ></TR ><TR ><TD ><TT CLASS="OPTION" >-W <TT CLASS="REPLACEABLE" ><I >x</I ></TT ></TT ></TD ><TD ><TT CLASS="LITERAL" >post_auth_delay = <TT CLASS="REPLACEABLE" ><I >x</I ></TT ></TT ></TD ></TR ></TBODY ></TABLE ></DIV ></DIV ><DIV CLASS="NAVFOOTER" ><HR ALIGN="LEFT" WIDTH="100%"><TABLE SUMMARY="Footer navigation table" WIDTH="100%" BORDER="0" CELLPADDING="0" CELLSPACING="0" ><TR ><TD WIDTH="33%" ALIGN="left" VALIGN="top" ><A HREF="runtime-config-developer.html" ACCESSKEY="P" >Prev</A ></TD ><TD WIDTH="34%" ALIGN="center" VALIGN="top" ><A HREF="index.html" ACCESSKEY="H" >Home</A ></TD ><TD WIDTH="33%" ALIGN="right" VALIGN="top" ><A HREF="client-authentication.html" ACCESSKEY="N" >Next</A ></TD ></TR ><TR ><TD WIDTH="33%" ALIGN="left" VALIGN="top" >Developer Options</TD ><TD WIDTH="34%" ALIGN="center" VALIGN="top" ><A HREF="runtime-config.html" ACCESSKEY="U" >Up</A ></TD ><TD WIDTH="33%" ALIGN="right" VALIGN="top" >Client Authentication</TD ></TR ></TABLE ></DIV ></BODY ></HTML >