dig.html revision 8de7014e56565605a51898a2a33a8b08fd3f1e57
822fb41d6f36e90a1ec836b32f869e1235e7da40tsien<!--
822fb41d6f36e90a1ec836b32f869e1235e7da40tsien - Copyright (C) 2000, 2001 Internet Software Consortium.
822fb41d6f36e90a1ec836b32f869e1235e7da40tsien -
822fb41d6f36e90a1ec836b32f869e1235e7da40tsien - Permission to use, copy, modify, and distribute this software for any
2f523b64504a53ab2ee3baf2cc417a936a07a13fjroberts - purpose with or without fee is hereby granted, provided that the above
2f523b64504a53ab2ee3baf2cc417a936a07a13fjroberts - copyright notice and this permission notice appear in all copies.
822fb41d6f36e90a1ec836b32f869e1235e7da40tsien -
822fb41d6f36e90a1ec836b32f869e1235e7da40tsien - THE SOFTWARE IS PROVIDED "AS IS" AND INTERNET SOFTWARE CONSORTIUM
822fb41d6f36e90a1ec836b32f869e1235e7da40tsien - DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL
822fb41d6f36e90a1ec836b32f869e1235e7da40tsien - IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL
822fb41d6f36e90a1ec836b32f869e1235e7da40tsien - INTERNET SOFTWARE CONSORTIUM BE LIABLE FOR ANY SPECIAL, DIRECT,
822fb41d6f36e90a1ec836b32f869e1235e7da40tsien - INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING
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822fb41d6f36e90a1ec836b32f869e1235e7da40tsien - WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
822fb41d6f36e90a1ec836b32f869e1235e7da40tsien-->
822fb41d6f36e90a1ec836b32f869e1235e7da40tsien<HTML
822fb41d6f36e90a1ec836b32f869e1235e7da40tsien><HEAD
822fb41d6f36e90a1ec836b32f869e1235e7da40tsien><TITLE
822fb41d6f36e90a1ec836b32f869e1235e7da40tsien>dig</TITLE
2f523b64504a53ab2ee3baf2cc417a936a07a13fjroberts><META
822fb41d6f36e90a1ec836b32f869e1235e7da40tsienNAME="GENERATOR"
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822fb41d6f36e90a1ec836b32f869e1235e7da40tsien><H1
822fb41d6f36e90a1ec836b32f869e1235e7da40tsien><A
822fb41d6f36e90a1ec836b32f869e1235e7da40tsienNAME="AEN1"
822fb41d6f36e90a1ec836b32f869e1235e7da40tsien>dig</A
822fb41d6f36e90a1ec836b32f869e1235e7da40tsien></H1
822fb41d6f36e90a1ec836b32f869e1235e7da40tsien><DIV
822fb41d6f36e90a1ec836b32f869e1235e7da40tsienCLASS="REFNAMEDIV"
822fb41d6f36e90a1ec836b32f869e1235e7da40tsien><A
822fb41d6f36e90a1ec836b32f869e1235e7da40tsienNAME="AEN8"
822fb41d6f36e90a1ec836b32f869e1235e7da40tsien></A
822fb41d6f36e90a1ec836b32f869e1235e7da40tsien><H2
31e37bb439502e3f7c4c0a9a77d655ea5d56887avn>Name</H2
822fb41d6f36e90a1ec836b32f869e1235e7da40tsien>dig&nbsp;--&nbsp;DNS lookup utility</DIV
822fb41d6f36e90a1ec836b32f869e1235e7da40tsien><DIV
822fb41d6f36e90a1ec836b32f869e1235e7da40tsienCLASS="REFSYNOPSISDIV"
822fb41d6f36e90a1ec836b32f869e1235e7da40tsien><A
822fb41d6f36e90a1ec836b32f869e1235e7da40tsienNAME="AEN11"
822fb41d6f36e90a1ec836b32f869e1235e7da40tsien></A
6dfee4834394825da35b977ca71cdc965bc7b6a4tsien><H2
6dfee4834394825da35b977ca71cdc965bc7b6a4tsien>Synopsis</H2
822fb41d6f36e90a1ec836b32f869e1235e7da40tsien><P
6dfee4834394825da35b977ca71cdc965bc7b6a4tsien><B
6dfee4834394825da35b977ca71cdc965bc7b6a4tsienCLASS="COMMAND"
6dfee4834394825da35b977ca71cdc965bc7b6a4tsien>dig</B
6dfee4834394825da35b977ca71cdc965bc7b6a4tsien> [@server] [<TT
6dfee4834394825da35b977ca71cdc965bc7b6a4tsienCLASS="OPTION"
6dfee4834394825da35b977ca71cdc965bc7b6a4tsien>-b <TT
822fb41d6f36e90a1ec836b32f869e1235e7da40tsienCLASS="REPLACEABLE"
54d9a2593fde02a00a43f74dbbc438402369fd6ajc><I
54d9a2593fde02a00a43f74dbbc438402369fd6ajc>address</I
54d9a2593fde02a00a43f74dbbc438402369fd6ajc></TT
54d9a2593fde02a00a43f74dbbc438402369fd6ajc></TT
822fb41d6f36e90a1ec836b32f869e1235e7da40tsien>] [<TT
822fb41d6f36e90a1ec836b32f869e1235e7da40tsienCLASS="OPTION"
822fb41d6f36e90a1ec836b32f869e1235e7da40tsien>-c <TT
822fb41d6f36e90a1ec836b32f869e1235e7da40tsienCLASS="REPLACEABLE"
822fb41d6f36e90a1ec836b32f869e1235e7da40tsien><I
822fb41d6f36e90a1ec836b32f869e1235e7da40tsien>class</I
2f523b64504a53ab2ee3baf2cc417a936a07a13fjroberts></TT
2f523b64504a53ab2ee3baf2cc417a936a07a13fjroberts></TT
822fb41d6f36e90a1ec836b32f869e1235e7da40tsien>] [<TT
822fb41d6f36e90a1ec836b32f869e1235e7da40tsienCLASS="OPTION"
822fb41d6f36e90a1ec836b32f869e1235e7da40tsien>-f <TT
822fb41d6f36e90a1ec836b32f869e1235e7da40tsienCLASS="REPLACEABLE"
822fb41d6f36e90a1ec836b32f869e1235e7da40tsien><I
822fb41d6f36e90a1ec836b32f869e1235e7da40tsien>filename</I
822fb41d6f36e90a1ec836b32f869e1235e7da40tsien></TT
822fb41d6f36e90a1ec836b32f869e1235e7da40tsien></TT
822fb41d6f36e90a1ec836b32f869e1235e7da40tsien>] [<TT
822fb41d6f36e90a1ec836b32f869e1235e7da40tsienCLASS="OPTION"
822fb41d6f36e90a1ec836b32f869e1235e7da40tsien>-k <TT
822fb41d6f36e90a1ec836b32f869e1235e7da40tsienCLASS="REPLACEABLE"
822fb41d6f36e90a1ec836b32f869e1235e7da40tsien><I
822fb41d6f36e90a1ec836b32f869e1235e7da40tsien>filename</I
822fb41d6f36e90a1ec836b32f869e1235e7da40tsien></TT
822fb41d6f36e90a1ec836b32f869e1235e7da40tsien></TT
822fb41d6f36e90a1ec836b32f869e1235e7da40tsien>] [<TT
822fb41d6f36e90a1ec836b32f869e1235e7da40tsienCLASS="OPTION"
822fb41d6f36e90a1ec836b32f869e1235e7da40tsien>-p <TT
822fb41d6f36e90a1ec836b32f869e1235e7da40tsienCLASS="REPLACEABLE"
822fb41d6f36e90a1ec836b32f869e1235e7da40tsien><I
822fb41d6f36e90a1ec836b32f869e1235e7da40tsien>port#</I
822fb41d6f36e90a1ec836b32f869e1235e7da40tsien></TT
822fb41d6f36e90a1ec836b32f869e1235e7da40tsien></TT
822fb41d6f36e90a1ec836b32f869e1235e7da40tsien>] [<TT
822fb41d6f36e90a1ec836b32f869e1235e7da40tsienCLASS="OPTION"
822fb41d6f36e90a1ec836b32f869e1235e7da40tsien>-t <TT
822fb41d6f36e90a1ec836b32f869e1235e7da40tsienCLASS="REPLACEABLE"
822fb41d6f36e90a1ec836b32f869e1235e7da40tsien><I
822fb41d6f36e90a1ec836b32f869e1235e7da40tsien>type</I
822fb41d6f36e90a1ec836b32f869e1235e7da40tsien></TT
822fb41d6f36e90a1ec836b32f869e1235e7da40tsien></TT
822fb41d6f36e90a1ec836b32f869e1235e7da40tsien>] [<TT
822fb41d6f36e90a1ec836b32f869e1235e7da40tsienCLASS="OPTION"
822fb41d6f36e90a1ec836b32f869e1235e7da40tsien>-x <TT
822fb41d6f36e90a1ec836b32f869e1235e7da40tsienCLASS="REPLACEABLE"
822fb41d6f36e90a1ec836b32f869e1235e7da40tsien><I
822fb41d6f36e90a1ec836b32f869e1235e7da40tsien>addr</I
822fb41d6f36e90a1ec836b32f869e1235e7da40tsien></TT
822fb41d6f36e90a1ec836b32f869e1235e7da40tsien></TT
822fb41d6f36e90a1ec836b32f869e1235e7da40tsien>] [<TT
822fb41d6f36e90a1ec836b32f869e1235e7da40tsienCLASS="OPTION"
822fb41d6f36e90a1ec836b32f869e1235e7da40tsien>-y <TT
822fb41d6f36e90a1ec836b32f869e1235e7da40tsienCLASS="REPLACEABLE"
822fb41d6f36e90a1ec836b32f869e1235e7da40tsien><I
822fb41d6f36e90a1ec836b32f869e1235e7da40tsien>name:key</I
822fb41d6f36e90a1ec836b32f869e1235e7da40tsien></TT
822fb41d6f36e90a1ec836b32f869e1235e7da40tsien></TT
822fb41d6f36e90a1ec836b32f869e1235e7da40tsien>] [name] [type] [class] [queryopt...]</P
822fb41d6f36e90a1ec836b32f869e1235e7da40tsien><P
822fb41d6f36e90a1ec836b32f869e1235e7da40tsien><B
822fb41d6f36e90a1ec836b32f869e1235e7da40tsienCLASS="COMMAND"
822fb41d6f36e90a1ec836b32f869e1235e7da40tsien>dig</B
bddc11567b8dc8b10ae555463608aad4f0c6cb44db> [<TT
bddc11567b8dc8b10ae555463608aad4f0c6cb44dbCLASS="OPTION"
bddc11567b8dc8b10ae555463608aad4f0c6cb44db>-h</TT
bddc11567b8dc8b10ae555463608aad4f0c6cb44db>]</P
bddc11567b8dc8b10ae555463608aad4f0c6cb44db><P
bddc11567b8dc8b10ae555463608aad4f0c6cb44db><B
bddc11567b8dc8b10ae555463608aad4f0c6cb44dbCLASS="COMMAND"
bddc11567b8dc8b10ae555463608aad4f0c6cb44db>dig</B
bddc11567b8dc8b10ae555463608aad4f0c6cb44db> [global-queryopt...] [query...]</P
bddc11567b8dc8b10ae555463608aad4f0c6cb44db></DIV
6dfee4834394825da35b977ca71cdc965bc7b6a4tsien><DIV
6dfee4834394825da35b977ca71cdc965bc7b6a4tsienCLASS="REFSECT1"
6dfee4834394825da35b977ca71cdc965bc7b6a4tsien><A
6dfee4834394825da35b977ca71cdc965bc7b6a4tsienNAME="AEN51"
6dfee4834394825da35b977ca71cdc965bc7b6a4tsien></A
6dfee4834394825da35b977ca71cdc965bc7b6a4tsien><H2
6dfee4834394825da35b977ca71cdc965bc7b6a4tsien>DESCRIPTION</H2
6dfee4834394825da35b977ca71cdc965bc7b6a4tsien><P
6dfee4834394825da35b977ca71cdc965bc7b6a4tsien><B
6dfee4834394825da35b977ca71cdc965bc7b6a4tsienCLASS="COMMAND"
6dfee4834394825da35b977ca71cdc965bc7b6a4tsien>dig</B
6dfee4834394825da35b977ca71cdc965bc7b6a4tsien> (domain information groper) is a flexible tool
6dfee4834394825da35b977ca71cdc965bc7b6a4tsienfor interrogating DNS name servers. It performs DNS lookups and
6dfee4834394825da35b977ca71cdc965bc7b6a4tsiendisplays the answers that are returned from the name server(s) that
6dfee4834394825da35b977ca71cdc965bc7b6a4tsienwere queried. Most DNS administrators use <B
6dfee4834394825da35b977ca71cdc965bc7b6a4tsienCLASS="COMMAND"
6dfee4834394825da35b977ca71cdc965bc7b6a4tsien>dig</B
6dfee4834394825da35b977ca71cdc965bc7b6a4tsien> to
6dfee4834394825da35b977ca71cdc965bc7b6a4tsientroubleshoot DNS problems because of its flexibility, ease of use and
6dfee4834394825da35b977ca71cdc965bc7b6a4tsienclarity of output. Other lookup tools tend to have less functionality
6dfee4834394825da35b977ca71cdc965bc7b6a4tsienthan <B
6dfee4834394825da35b977ca71cdc965bc7b6a4tsienCLASS="COMMAND"
6dfee4834394825da35b977ca71cdc965bc7b6a4tsien>dig</B
6dfee4834394825da35b977ca71cdc965bc7b6a4tsien>.</P
6dfee4834394825da35b977ca71cdc965bc7b6a4tsien><P
6dfee4834394825da35b977ca71cdc965bc7b6a4tsien>Although <B
6dfee4834394825da35b977ca71cdc965bc7b6a4tsienCLASS="COMMAND"
6dfee4834394825da35b977ca71cdc965bc7b6a4tsien>dig</B
6dfee4834394825da35b977ca71cdc965bc7b6a4tsien> is normally used with command-line
6dfee4834394825da35b977ca71cdc965bc7b6a4tsienarguments, it also has a batch mode of operation for reading lookup
6dfee4834394825da35b977ca71cdc965bc7b6a4tsienrequests from a file. A brief summary of its command-line arguments
6dfee4834394825da35b977ca71cdc965bc7b6a4tsienand options is printed when the <TT
6dfee4834394825da35b977ca71cdc965bc7b6a4tsienCLASS="OPTION"
6dfee4834394825da35b977ca71cdc965bc7b6a4tsien>-h</TT
6dfee4834394825da35b977ca71cdc965bc7b6a4tsien> option is given.
6dfee4834394825da35b977ca71cdc965bc7b6a4tsienUnlike earlier versions, the BIND9 implementation of
6dfee4834394825da35b977ca71cdc965bc7b6a4tsien<B
6dfee4834394825da35b977ca71cdc965bc7b6a4tsienCLASS="COMMAND"
6dfee4834394825da35b977ca71cdc965bc7b6a4tsien>dig</B
6dfee4834394825da35b977ca71cdc965bc7b6a4tsien> allows multiple lookups to be issued from the
6dfee4834394825da35b977ca71cdc965bc7b6a4tsiencommand line.</P
6dfee4834394825da35b977ca71cdc965bc7b6a4tsien><P
6dfee4834394825da35b977ca71cdc965bc7b6a4tsien>Unless it is told to query a specific name server,
6dfee4834394825da35b977ca71cdc965bc7b6a4tsien<B
6dfee4834394825da35b977ca71cdc965bc7b6a4tsienCLASS="COMMAND"
6dfee4834394825da35b977ca71cdc965bc7b6a4tsien>dig</B
6dfee4834394825da35b977ca71cdc965bc7b6a4tsien> will try each of the servers listed in
6dfee4834394825da35b977ca71cdc965bc7b6a4tsien<TT
6dfee4834394825da35b977ca71cdc965bc7b6a4tsienCLASS="FILENAME"
6dfee4834394825da35b977ca71cdc965bc7b6a4tsien>/etc/resolv.conf</TT
6dfee4834394825da35b977ca71cdc965bc7b6a4tsien>.</P
6dfee4834394825da35b977ca71cdc965bc7b6a4tsien><P
6dfee4834394825da35b977ca71cdc965bc7b6a4tsien>When no command line arguments or options are given, will perform an
6dfee4834394825da35b977ca71cdc965bc7b6a4tsienNS query for "." (the root).</P
6dfee4834394825da35b977ca71cdc965bc7b6a4tsien></DIV
6dfee4834394825da35b977ca71cdc965bc7b6a4tsien><DIV
6dfee4834394825da35b977ca71cdc965bc7b6a4tsienCLASS="REFSECT1"
6dfee4834394825da35b977ca71cdc965bc7b6a4tsien><A
54d9a2593fde02a00a43f74dbbc438402369fd6ajcNAME="AEN65"
54d9a2593fde02a00a43f74dbbc438402369fd6ajc></A
6dfee4834394825da35b977ca71cdc965bc7b6a4tsien><H2
6dfee4834394825da35b977ca71cdc965bc7b6a4tsien>SIMPLE USAGE</H2
6dfee4834394825da35b977ca71cdc965bc7b6a4tsien><P
6dfee4834394825da35b977ca71cdc965bc7b6a4tsien>A typical invocation of <B
6dfee4834394825da35b977ca71cdc965bc7b6a4tsienCLASS="COMMAND"
6dfee4834394825da35b977ca71cdc965bc7b6a4tsien>dig</B
6dfee4834394825da35b977ca71cdc965bc7b6a4tsien> looks like:
6dfee4834394825da35b977ca71cdc965bc7b6a4tsien<PRE
6dfee4834394825da35b977ca71cdc965bc7b6a4tsienCLASS="PROGRAMLISTING"
6dfee4834394825da35b977ca71cdc965bc7b6a4tsien> dig @server name type </PRE
6dfee4834394825da35b977ca71cdc965bc7b6a4tsien> where:
6dfee4834394825da35b977ca71cdc965bc7b6a4tsien
6dfee4834394825da35b977ca71cdc965bc7b6a4tsien<P
6dfee4834394825da35b977ca71cdc965bc7b6a4tsien></P
6dfee4834394825da35b977ca71cdc965bc7b6a4tsien><DIV
6dfee4834394825da35b977ca71cdc965bc7b6a4tsienCLASS="VARIABLELIST"
6dfee4834394825da35b977ca71cdc965bc7b6a4tsien><DL
6dfee4834394825da35b977ca71cdc965bc7b6a4tsien><DT
6dfee4834394825da35b977ca71cdc965bc7b6a4tsien><TT
6dfee4834394825da35b977ca71cdc965bc7b6a4tsienCLASS="CONSTANT"
6dfee4834394825da35b977ca71cdc965bc7b6a4tsien>server</TT
6dfee4834394825da35b977ca71cdc965bc7b6a4tsien></DT
6dfee4834394825da35b977ca71cdc965bc7b6a4tsien><DD
6dfee4834394825da35b977ca71cdc965bc7b6a4tsien><P
6dfee4834394825da35b977ca71cdc965bc7b6a4tsien>is the name or IP address of the name server to query. An IPv4
6dfee4834394825da35b977ca71cdc965bc7b6a4tsienaddress can be provided in dotted-decimal notation. When the supplied
6dfee4834394825da35b977ca71cdc965bc7b6a4tsien<TT
6dfee4834394825da35b977ca71cdc965bc7b6a4tsienCLASS="PARAMETER"
6dfee4834394825da35b977ca71cdc965bc7b6a4tsien><I
816b7274e518aa45ca06ca360089e31938b0cabftsien>server</I
6dfee4834394825da35b977ca71cdc965bc7b6a4tsien></TT
816b7274e518aa45ca06ca360089e31938b0cabftsien> argument is a hostname,
6dfee4834394825da35b977ca71cdc965bc7b6a4tsien<B
6dfee4834394825da35b977ca71cdc965bc7b6a4tsienCLASS="COMMAND"
6dfee4834394825da35b977ca71cdc965bc7b6a4tsien>dig</B
6dfee4834394825da35b977ca71cdc965bc7b6a4tsien> resolves that name before querying that name
6dfee4834394825da35b977ca71cdc965bc7b6a4tsienserver. If no <TT
6dfee4834394825da35b977ca71cdc965bc7b6a4tsienCLASS="PARAMETER"
6dfee4834394825da35b977ca71cdc965bc7b6a4tsien><I
6dfee4834394825da35b977ca71cdc965bc7b6a4tsien>server</I
6dfee4834394825da35b977ca71cdc965bc7b6a4tsien></TT
6dfee4834394825da35b977ca71cdc965bc7b6a4tsien> argument is provided,
6dfee4834394825da35b977ca71cdc965bc7b6a4tsien<B
6dfee4834394825da35b977ca71cdc965bc7b6a4tsienCLASS="COMMAND"
6dfee4834394825da35b977ca71cdc965bc7b6a4tsien>dig</B
6dfee4834394825da35b977ca71cdc965bc7b6a4tsien> consults <TT
6dfee4834394825da35b977ca71cdc965bc7b6a4tsienCLASS="FILENAME"
6dfee4834394825da35b977ca71cdc965bc7b6a4tsien>/etc/resolv.conf</TT
6dfee4834394825da35b977ca71cdc965bc7b6a4tsien>
6dfee4834394825da35b977ca71cdc965bc7b6a4tsienand queries the name servers listed there. The reply from the name
6dfee4834394825da35b977ca71cdc965bc7b6a4tsienserver that responds is displayed.</P
6dfee4834394825da35b977ca71cdc965bc7b6a4tsien></DD
6dfee4834394825da35b977ca71cdc965bc7b6a4tsien><DT
816b7274e518aa45ca06ca360089e31938b0cabftsien><TT
816b7274e518aa45ca06ca360089e31938b0cabftsienCLASS="CONSTANT"
6dfee4834394825da35b977ca71cdc965bc7b6a4tsien>name</TT
6dfee4834394825da35b977ca71cdc965bc7b6a4tsien></DT
6dfee4834394825da35b977ca71cdc965bc7b6a4tsien><DD
6dfee4834394825da35b977ca71cdc965bc7b6a4tsien><P
6dfee4834394825da35b977ca71cdc965bc7b6a4tsien>is the name of the resource record that is to be looked up.</P
6dfee4834394825da35b977ca71cdc965bc7b6a4tsien></DD
6dfee4834394825da35b977ca71cdc965bc7b6a4tsien><DT
6dfee4834394825da35b977ca71cdc965bc7b6a4tsien><TT
6dfee4834394825da35b977ca71cdc965bc7b6a4tsienCLASS="CONSTANT"
6dfee4834394825da35b977ca71cdc965bc7b6a4tsien>type</TT
6dfee4834394825da35b977ca71cdc965bc7b6a4tsien></DT
6dfee4834394825da35b977ca71cdc965bc7b6a4tsien><DD
6dfee4834394825da35b977ca71cdc965bc7b6a4tsien><P
6dfee4834394825da35b977ca71cdc965bc7b6a4tsien>indicates what type of query is required &mdash;
6dfee4834394825da35b977ca71cdc965bc7b6a4tsienANY, A, MX, SIG, etc.
6dfee4834394825da35b977ca71cdc965bc7b6a4tsien<TT
6dfee4834394825da35b977ca71cdc965bc7b6a4tsienCLASS="PARAMETER"
6dfee4834394825da35b977ca71cdc965bc7b6a4tsien><I
6dfee4834394825da35b977ca71cdc965bc7b6a4tsien>type</I
6dfee4834394825da35b977ca71cdc965bc7b6a4tsien></TT
6dfee4834394825da35b977ca71cdc965bc7b6a4tsien> can be any valid query type. If no
6dfee4834394825da35b977ca71cdc965bc7b6a4tsien<TT
6dfee4834394825da35b977ca71cdc965bc7b6a4tsienCLASS="PARAMETER"
6dfee4834394825da35b977ca71cdc965bc7b6a4tsien><I
6dfee4834394825da35b977ca71cdc965bc7b6a4tsien>type</I
6dfee4834394825da35b977ca71cdc965bc7b6a4tsien></TT
6dfee4834394825da35b977ca71cdc965bc7b6a4tsien> argument is supplied,
6dfee4834394825da35b977ca71cdc965bc7b6a4tsien<B
6dfee4834394825da35b977ca71cdc965bc7b6a4tsienCLASS="COMMAND"
6dfee4834394825da35b977ca71cdc965bc7b6a4tsien>dig</B
6dfee4834394825da35b977ca71cdc965bc7b6a4tsien> will perform a lookup for an A record.</P
6dfee4834394825da35b977ca71cdc965bc7b6a4tsien></DD
6dfee4834394825da35b977ca71cdc965bc7b6a4tsien></DL
6dfee4834394825da35b977ca71cdc965bc7b6a4tsien></DIV
6dfee4834394825da35b977ca71cdc965bc7b6a4tsien></P
6dfee4834394825da35b977ca71cdc965bc7b6a4tsien></DIV
6dfee4834394825da35b977ca71cdc965bc7b6a4tsien><DIV
6dfee4834394825da35b977ca71cdc965bc7b6a4tsienCLASS="REFSECT1"
6dfee4834394825da35b977ca71cdc965bc7b6a4tsien><A
6dfee4834394825da35b977ca71cdc965bc7b6a4tsienNAME="AEN94"
6dfee4834394825da35b977ca71cdc965bc7b6a4tsien></A
6dfee4834394825da35b977ca71cdc965bc7b6a4tsien><H2
6dfee4834394825da35b977ca71cdc965bc7b6a4tsien>OPTIONS</H2
6dfee4834394825da35b977ca71cdc965bc7b6a4tsien><P
6dfee4834394825da35b977ca71cdc965bc7b6a4tsien>The <TT
6dfee4834394825da35b977ca71cdc965bc7b6a4tsienCLASS="OPTION"
6dfee4834394825da35b977ca71cdc965bc7b6a4tsien>-b</TT
6dfee4834394825da35b977ca71cdc965bc7b6a4tsien> option sets the source IP address of the query
6dfee4834394825da35b977ca71cdc965bc7b6a4tsiento <TT
6dfee4834394825da35b977ca71cdc965bc7b6a4tsienCLASS="PARAMETER"
6dfee4834394825da35b977ca71cdc965bc7b6a4tsien><I
6dfee4834394825da35b977ca71cdc965bc7b6a4tsien>address</I
54d9a2593fde02a00a43f74dbbc438402369fd6ajc></TT
54d9a2593fde02a00a43f74dbbc438402369fd6ajc>. This must be a valid address on
54d9a2593fde02a00a43f74dbbc438402369fd6ajcone of the host's network interfaces.</P
54d9a2593fde02a00a43f74dbbc438402369fd6ajc><P
54d9a2593fde02a00a43f74dbbc438402369fd6ajc>The default query class (IN for internet) is overridden by the
54d9a2593fde02a00a43f74dbbc438402369fd6ajc<TT
54d9a2593fde02a00a43f74dbbc438402369fd6ajcCLASS="OPTION"
54d9a2593fde02a00a43f74dbbc438402369fd6ajc>-c</TT
54d9a2593fde02a00a43f74dbbc438402369fd6ajc> option. <TT
54d9a2593fde02a00a43f74dbbc438402369fd6ajcCLASS="PARAMETER"
54d9a2593fde02a00a43f74dbbc438402369fd6ajc><I
54d9a2593fde02a00a43f74dbbc438402369fd6ajc>class</I
54d9a2593fde02a00a43f74dbbc438402369fd6ajc></TT
54d9a2593fde02a00a43f74dbbc438402369fd6ajc> is any valid
54d9a2593fde02a00a43f74dbbc438402369fd6ajcclass, such as HS for Hesiod records or CH for CHAOSNET records.</P
54d9a2593fde02a00a43f74dbbc438402369fd6ajc><P
54d9a2593fde02a00a43f74dbbc438402369fd6ajc>The <TT
54d9a2593fde02a00a43f74dbbc438402369fd6ajcCLASS="OPTION"
54d9a2593fde02a00a43f74dbbc438402369fd6ajc>-f</TT
54d9a2593fde02a00a43f74dbbc438402369fd6ajc> option makes <B
54d9a2593fde02a00a43f74dbbc438402369fd6ajcCLASS="COMMAND"
54d9a2593fde02a00a43f74dbbc438402369fd6ajc>dig </B
54d9a2593fde02a00a43f74dbbc438402369fd6ajc> operate
54d9a2593fde02a00a43f74dbbc438402369fd6ajcin batch mode by reading a list of lookup requests to process from the
54d9a2593fde02a00a43f74dbbc438402369fd6ajcfile <TT
54d9a2593fde02a00a43f74dbbc438402369fd6ajcCLASS="PARAMETER"
54d9a2593fde02a00a43f74dbbc438402369fd6ajc><I
54d9a2593fde02a00a43f74dbbc438402369fd6ajc>filename</I
54d9a2593fde02a00a43f74dbbc438402369fd6ajc></TT
54d9a2593fde02a00a43f74dbbc438402369fd6ajc>. The file contains a number of
54d9a2593fde02a00a43f74dbbc438402369fd6ajcqueries, one per line. Each entry in the file should be organised in
54d9a2593fde02a00a43f74dbbc438402369fd6ajcthe same way they would be presented as queries to
54d9a2593fde02a00a43f74dbbc438402369fd6ajc<B
54d9a2593fde02a00a43f74dbbc438402369fd6ajcCLASS="COMMAND"
54d9a2593fde02a00a43f74dbbc438402369fd6ajc>dig</B
54d9a2593fde02a00a43f74dbbc438402369fd6ajc> using the command-line interface.</P
54d9a2593fde02a00a43f74dbbc438402369fd6ajc><P
54d9a2593fde02a00a43f74dbbc438402369fd6ajc>If a non-standard port number is to be queried, the
54d9a2593fde02a00a43f74dbbc438402369fd6ajc<TT
54d9a2593fde02a00a43f74dbbc438402369fd6ajcCLASS="OPTION"
54d9a2593fde02a00a43f74dbbc438402369fd6ajc>-p</TT
54d9a2593fde02a00a43f74dbbc438402369fd6ajc> option is used. <TT
54d9a2593fde02a00a43f74dbbc438402369fd6ajcCLASS="PARAMETER"
54d9a2593fde02a00a43f74dbbc438402369fd6ajc><I
54d9a2593fde02a00a43f74dbbc438402369fd6ajc>port#</I
54d9a2593fde02a00a43f74dbbc438402369fd6ajc></TT
54d9a2593fde02a00a43f74dbbc438402369fd6ajc> is
54d9a2593fde02a00a43f74dbbc438402369fd6ajcthe port number that <B
54d9a2593fde02a00a43f74dbbc438402369fd6ajcCLASS="COMMAND"
54d9a2593fde02a00a43f74dbbc438402369fd6ajc>dig</B
54d9a2593fde02a00a43f74dbbc438402369fd6ajc> will send its queries
54d9a2593fde02a00a43f74dbbc438402369fd6ajcinstead of the standard DNS port number 53. This option would be used
54d9a2593fde02a00a43f74dbbc438402369fd6ajcto test a name server that has been configured to listen for queries
54d9a2593fde02a00a43f74dbbc438402369fd6ajcon a non-standard port number.</P
54d9a2593fde02a00a43f74dbbc438402369fd6ajc><P
54d9a2593fde02a00a43f74dbbc438402369fd6ajc>The <TT
54d9a2593fde02a00a43f74dbbc438402369fd6ajcCLASS="OPTION"
54d9a2593fde02a00a43f74dbbc438402369fd6ajc>-t</TT
54d9a2593fde02a00a43f74dbbc438402369fd6ajc> option sets the query type to
54d9a2593fde02a00a43f74dbbc438402369fd6ajc<TT
54d9a2593fde02a00a43f74dbbc438402369fd6ajcCLASS="PARAMETER"
54d9a2593fde02a00a43f74dbbc438402369fd6ajc><I
54d9a2593fde02a00a43f74dbbc438402369fd6ajc>type</I
54d9a2593fde02a00a43f74dbbc438402369fd6ajc></TT
54d9a2593fde02a00a43f74dbbc438402369fd6ajc>. It can be any valid query type which is
54d9a2593fde02a00a43f74dbbc438402369fd6ajcsupported in BIND9. The default query type "A", unless the
54d9a2593fde02a00a43f74dbbc438402369fd6ajc<TT
54d9a2593fde02a00a43f74dbbc438402369fd6ajcCLASS="OPTION"
54d9a2593fde02a00a43f74dbbc438402369fd6ajc>-x</TT
54d9a2593fde02a00a43f74dbbc438402369fd6ajc> option is supplied to indicate a reverse lookup.
54d9a2593fde02a00a43f74dbbc438402369fd6ajcA zone transfer can be requested by specifying a type of AXFR. When
54d9a2593fde02a00a43f74dbbc438402369fd6ajcan incremental zone transfer (IXFR) is required,
54d9a2593fde02a00a43f74dbbc438402369fd6ajc<TT
54d9a2593fde02a00a43f74dbbc438402369fd6ajcCLASS="PARAMETER"
54d9a2593fde02a00a43f74dbbc438402369fd6ajc><I
54d9a2593fde02a00a43f74dbbc438402369fd6ajc>type</I
54d9a2593fde02a00a43f74dbbc438402369fd6ajc></TT
6dfee4834394825da35b977ca71cdc965bc7b6a4tsien> is set to <TT
6dfee4834394825da35b977ca71cdc965bc7b6a4tsienCLASS="LITERAL"
6dfee4834394825da35b977ca71cdc965bc7b6a4tsien>ixfr=N</TT
6dfee4834394825da35b977ca71cdc965bc7b6a4tsien>.
6dfee4834394825da35b977ca71cdc965bc7b6a4tsienThe incremental zone transfer will contain the changes made to the zone
6dfee4834394825da35b977ca71cdc965bc7b6a4tsiensince the serial number in the zone's SOA record was
6dfee4834394825da35b977ca71cdc965bc7b6a4tsien<TT
6dfee4834394825da35b977ca71cdc965bc7b6a4tsienCLASS="PARAMETER"
6dfee4834394825da35b977ca71cdc965bc7b6a4tsien><I
6dfee4834394825da35b977ca71cdc965bc7b6a4tsien>N</I
6dfee4834394825da35b977ca71cdc965bc7b6a4tsien></TT
6dfee4834394825da35b977ca71cdc965bc7b6a4tsien>.</P
6dfee4834394825da35b977ca71cdc965bc7b6a4tsien><P
6dfee4834394825da35b977ca71cdc965bc7b6a4tsien>Reverse lookups - mapping addresses to names - are simplified by the
6dfee4834394825da35b977ca71cdc965bc7b6a4tsien<TT
6dfee4834394825da35b977ca71cdc965bc7b6a4tsienCLASS="OPTION"
6dfee4834394825da35b977ca71cdc965bc7b6a4tsien>-x</TT
6dfee4834394825da35b977ca71cdc965bc7b6a4tsien> option. <TT
6dfee4834394825da35b977ca71cdc965bc7b6a4tsienCLASS="PARAMETER"
6dfee4834394825da35b977ca71cdc965bc7b6a4tsien><I
6dfee4834394825da35b977ca71cdc965bc7b6a4tsien>addr</I
6dfee4834394825da35b977ca71cdc965bc7b6a4tsien></TT
6dfee4834394825da35b977ca71cdc965bc7b6a4tsien> is an IPv4
6dfee4834394825da35b977ca71cdc965bc7b6a4tsienaddress in dotted-decimal notation, or a colon-delimited IPv6 address.
6dfee4834394825da35b977ca71cdc965bc7b6a4tsienWhen this option is used, there is no need to provide the
6dfee4834394825da35b977ca71cdc965bc7b6a4tsien<TT
6dfee4834394825da35b977ca71cdc965bc7b6a4tsienCLASS="PARAMETER"
6dfee4834394825da35b977ca71cdc965bc7b6a4tsien><I
6dfee4834394825da35b977ca71cdc965bc7b6a4tsien>name</I
6dfee4834394825da35b977ca71cdc965bc7b6a4tsien></TT
6dfee4834394825da35b977ca71cdc965bc7b6a4tsien>, <TT
6dfee4834394825da35b977ca71cdc965bc7b6a4tsienCLASS="PARAMETER"
6dfee4834394825da35b977ca71cdc965bc7b6a4tsien><I
6dfee4834394825da35b977ca71cdc965bc7b6a4tsien>class</I
6dfee4834394825da35b977ca71cdc965bc7b6a4tsien></TT
6dfee4834394825da35b977ca71cdc965bc7b6a4tsien> and
6dfee4834394825da35b977ca71cdc965bc7b6a4tsien<TT
6dfee4834394825da35b977ca71cdc965bc7b6a4tsienCLASS="PARAMETER"
6dfee4834394825da35b977ca71cdc965bc7b6a4tsien><I
6dfee4834394825da35b977ca71cdc965bc7b6a4tsien>type</I
6dfee4834394825da35b977ca71cdc965bc7b6a4tsien></TT
6dfee4834394825da35b977ca71cdc965bc7b6a4tsien> arguments. <B
6dfee4834394825da35b977ca71cdc965bc7b6a4tsienCLASS="COMMAND"
6dfee4834394825da35b977ca71cdc965bc7b6a4tsien>dig</B
6dfee4834394825da35b977ca71cdc965bc7b6a4tsien>
6dfee4834394825da35b977ca71cdc965bc7b6a4tsienautomatically performs a lookup for a name like
6dfee4834394825da35b977ca71cdc965bc7b6a4tsien<TT
6dfee4834394825da35b977ca71cdc965bc7b6a4tsienCLASS="LITERAL"
6dfee4834394825da35b977ca71cdc965bc7b6a4tsien>11.12.13.10.in-addr.arpa</TT
6dfee4834394825da35b977ca71cdc965bc7b6a4tsien> and sets the query type and
6dfee4834394825da35b977ca71cdc965bc7b6a4tsienclass to PTR and IN respectively. By default, IPv6 addresses are
6dfee4834394825da35b977ca71cdc965bc7b6a4tsienlooked up using the IP6.ARPA domain and binary labels as defined in
6dfee4834394825da35b977ca71cdc965bc7b6a4tsienRFC2874. To use the older RFC1886 method using the IP6.INT domain and
6dfee4834394825da35b977ca71cdc965bc7b6a4tsien"nibble" labels, specify the <TT
6dfee4834394825da35b977ca71cdc965bc7b6a4tsienCLASS="OPTION"
6dfee4834394825da35b977ca71cdc965bc7b6a4tsien>-n</TT
6dfee4834394825da35b977ca71cdc965bc7b6a4tsien> (nibble) option.</P
6dfee4834394825da35b977ca71cdc965bc7b6a4tsien><P
6dfee4834394825da35b977ca71cdc965bc7b6a4tsien>To sign the DNS queries sent by <B
6dfee4834394825da35b977ca71cdc965bc7b6a4tsienCLASS="COMMAND"
6dfee4834394825da35b977ca71cdc965bc7b6a4tsien>dig</B
6dfee4834394825da35b977ca71cdc965bc7b6a4tsien> and their
6dfee4834394825da35b977ca71cdc965bc7b6a4tsienresponses using transaction signatures (TSIG), specify a TSIG key file
6dfee4834394825da35b977ca71cdc965bc7b6a4tsienusing the <TT
6dfee4834394825da35b977ca71cdc965bc7b6a4tsienCLASS="OPTION"
6dfee4834394825da35b977ca71cdc965bc7b6a4tsien>-k</TT
6dfee4834394825da35b977ca71cdc965bc7b6a4tsien> option. You can also specify the TSIG
6dfee4834394825da35b977ca71cdc965bc7b6a4tsienkey itself on the command line using the <TT
6dfee4834394825da35b977ca71cdc965bc7b6a4tsienCLASS="OPTION"
6dfee4834394825da35b977ca71cdc965bc7b6a4tsien>-y</TT
6dfee4834394825da35b977ca71cdc965bc7b6a4tsien> option;
6dfee4834394825da35b977ca71cdc965bc7b6a4tsien<TT
6dfee4834394825da35b977ca71cdc965bc7b6a4tsienCLASS="PARAMETER"
6dfee4834394825da35b977ca71cdc965bc7b6a4tsien><I
6dfee4834394825da35b977ca71cdc965bc7b6a4tsien>name</I
6dfee4834394825da35b977ca71cdc965bc7b6a4tsien></TT
6dfee4834394825da35b977ca71cdc965bc7b6a4tsien> is the name of the TSIG key and
6dfee4834394825da35b977ca71cdc965bc7b6a4tsien<TT
6dfee4834394825da35b977ca71cdc965bc7b6a4tsienCLASS="PARAMETER"
6dfee4834394825da35b977ca71cdc965bc7b6a4tsien><I
6dfee4834394825da35b977ca71cdc965bc7b6a4tsien>key</I
6dfee4834394825da35b977ca71cdc965bc7b6a4tsien></TT
6dfee4834394825da35b977ca71cdc965bc7b6a4tsien> is the actual key. The key is a base-64
6dfee4834394825da35b977ca71cdc965bc7b6a4tsienencoded string, typically generated by <SPAN
6dfee4834394825da35b977ca71cdc965bc7b6a4tsienCLASS="CITEREFENTRY"
6dfee4834394825da35b977ca71cdc965bc7b6a4tsien><SPAN
6dfee4834394825da35b977ca71cdc965bc7b6a4tsienCLASS="REFENTRYTITLE"
6dfee4834394825da35b977ca71cdc965bc7b6a4tsien>dnssec-keygen</SPAN
6dfee4834394825da35b977ca71cdc965bc7b6a4tsien>(8)</SPAN
6dfee4834394825da35b977ca71cdc965bc7b6a4tsien>.
6dfee4834394825da35b977ca71cdc965bc7b6a4tsien
6dfee4834394825da35b977ca71cdc965bc7b6a4tsienCaution should be taken when using the <TT
6dfee4834394825da35b977ca71cdc965bc7b6a4tsienCLASS="OPTION"
6dfee4834394825da35b977ca71cdc965bc7b6a4tsien>-y</TT
6dfee4834394825da35b977ca71cdc965bc7b6a4tsien> option on
6dfee4834394825da35b977ca71cdc965bc7b6a4tsienmulti-user systems as the key can be visible in the output from
6dfee4834394825da35b977ca71cdc965bc7b6a4tsien<SPAN
6dfee4834394825da35b977ca71cdc965bc7b6a4tsienCLASS="CITEREFENTRY"
6dfee4834394825da35b977ca71cdc965bc7b6a4tsien><SPAN
6dfee4834394825da35b977ca71cdc965bc7b6a4tsienCLASS="REFENTRYTITLE"
6dfee4834394825da35b977ca71cdc965bc7b6a4tsien>ps</SPAN
6dfee4834394825da35b977ca71cdc965bc7b6a4tsien>(1)</SPAN
6dfee4834394825da35b977ca71cdc965bc7b6a4tsien> or in the shell's history file. When
6dfee4834394825da35b977ca71cdc965bc7b6a4tsienusing TSIG authentication with <B
6dfee4834394825da35b977ca71cdc965bc7b6a4tsienCLASS="COMMAND"
6dfee4834394825da35b977ca71cdc965bc7b6a4tsien>dig</B
6dfee4834394825da35b977ca71cdc965bc7b6a4tsien>, the name
6dfee4834394825da35b977ca71cdc965bc7b6a4tsienserver that is queried needs to know the key and algorithm that is
6dfee4834394825da35b977ca71cdc965bc7b6a4tsienbeing used. In BIND, this is done by providing appropriate
6dfee4834394825da35b977ca71cdc965bc7b6a4tsien<B
6dfee4834394825da35b977ca71cdc965bc7b6a4tsienCLASS="COMMAND"
6dfee4834394825da35b977ca71cdc965bc7b6a4tsien>key</B
6dfee4834394825da35b977ca71cdc965bc7b6a4tsien> and <B
6dfee4834394825da35b977ca71cdc965bc7b6a4tsienCLASS="COMMAND"
6dfee4834394825da35b977ca71cdc965bc7b6a4tsien>server</B
6dfee4834394825da35b977ca71cdc965bc7b6a4tsien> statements in
6dfee4834394825da35b977ca71cdc965bc7b6a4tsien<TT
6dfee4834394825da35b977ca71cdc965bc7b6a4tsienCLASS="FILENAME"
6dfee4834394825da35b977ca71cdc965bc7b6a4tsien>named.conf</TT
6dfee4834394825da35b977ca71cdc965bc7b6a4tsien>.</P
6dfee4834394825da35b977ca71cdc965bc7b6a4tsien></DIV
6dfee4834394825da35b977ca71cdc965bc7b6a4tsien><DIV
6dfee4834394825da35b977ca71cdc965bc7b6a4tsienCLASS="REFSECT1"
6dfee4834394825da35b977ca71cdc965bc7b6a4tsien><A
6dfee4834394825da35b977ca71cdc965bc7b6a4tsienNAME="AEN144"
6dfee4834394825da35b977ca71cdc965bc7b6a4tsien></A
6dfee4834394825da35b977ca71cdc965bc7b6a4tsien><H2
6dfee4834394825da35b977ca71cdc965bc7b6a4tsien>QUERY OPTIONS</H2
6dfee4834394825da35b977ca71cdc965bc7b6a4tsien><P
6dfee4834394825da35b977ca71cdc965bc7b6a4tsien><B
6dfee4834394825da35b977ca71cdc965bc7b6a4tsienCLASS="COMMAND"
6dfee4834394825da35b977ca71cdc965bc7b6a4tsien>dig</B
6dfee4834394825da35b977ca71cdc965bc7b6a4tsien> provides a number of query options which affect
6dfee4834394825da35b977ca71cdc965bc7b6a4tsienthe way in which lookups are made and the results displayed. Some of
6dfee4834394825da35b977ca71cdc965bc7b6a4tsienthese set or reset flag bits in the query header, some determine which
54d9a2593fde02a00a43f74dbbc438402369fd6ajcsections of the answer get printed, and others determine the timeout
54d9a2593fde02a00a43f74dbbc438402369fd6ajcand retry strategies.</P
54d9a2593fde02a00a43f74dbbc438402369fd6ajc><P
6dfee4834394825da35b977ca71cdc965bc7b6a4tsien>Each query option is identified by a keyword preceded by a plus sign
6dfee4834394825da35b977ca71cdc965bc7b6a4tsien(<TT
6dfee4834394825da35b977ca71cdc965bc7b6a4tsienCLASS="LITERAL"
6dfee4834394825da35b977ca71cdc965bc7b6a4tsien>+</TT
6dfee4834394825da35b977ca71cdc965bc7b6a4tsien>). Some keywords set or reset an option. These may be preceded
6dfee4834394825da35b977ca71cdc965bc7b6a4tsienby the string <TT
6dfee4834394825da35b977ca71cdc965bc7b6a4tsienCLASS="LITERAL"
6dfee4834394825da35b977ca71cdc965bc7b6a4tsien>no</TT
6dfee4834394825da35b977ca71cdc965bc7b6a4tsien> to negate the meaning of that keyword. Other
6dfee4834394825da35b977ca71cdc965bc7b6a4tsienkeywords assign values to options like the timeout interval. They
6dfee4834394825da35b977ca71cdc965bc7b6a4tsienhave the form <TT
6dfee4834394825da35b977ca71cdc965bc7b6a4tsienCLASS="OPTION"
6dfee4834394825da35b977ca71cdc965bc7b6a4tsien>+keyword=value</TT
6dfee4834394825da35b977ca71cdc965bc7b6a4tsien>.
6dfee4834394825da35b977ca71cdc965bc7b6a4tsienThe query options are:
31e37bb439502e3f7c4c0a9a77d655ea5d56887avn
31e37bb439502e3f7c4c0a9a77d655ea5d56887avn<P
31e37bb439502e3f7c4c0a9a77d655ea5d56887avn></P
31e37bb439502e3f7c4c0a9a77d655ea5d56887avn><DIV
31e37bb439502e3f7c4c0a9a77d655ea5d56887avnCLASS="VARIABLELIST"
31e37bb439502e3f7c4c0a9a77d655ea5d56887avn><DL
31e37bb439502e3f7c4c0a9a77d655ea5d56887avn><DT
><TT
CLASS="OPTION"
>+[no]tcp</TT
></DT
><DD
><P
>Use [do not use] TCP when querying name servers. The default
behaviour is to use UDP unless an AXFR or IXFR query is requested, in
which case a TCP connection is used.</P
></DD
><DT
><TT
CLASS="OPTION"
>+[no]vc</TT
></DT
><DD
><P
>Use [do not use] TCP when querying name servers. This alternate
syntax to <TT
CLASS="PARAMETER"
><I
>+[no]tcp</I
></TT
> is provided for backwards
compatibility. The "vc" stands for "virtual circuit".</P
></DD
><DT
><TT
CLASS="OPTION"
>+[no]ignore</TT
></DT
><DD
><P
>Ignore truncation in UDP responses instead of retrying with TCP. By
default, TCP retries are performed.</P
></DD
><DT
><TT
CLASS="OPTION"
>+domain=somename</TT
></DT
><DD
><P
>Set the search list to contain the single domain
<TT
CLASS="PARAMETER"
><I
>somename</I
></TT
>, as if specified in a
<B
CLASS="COMMAND"
>domain</B
> directive in
<TT
CLASS="FILENAME"
>/etc/resolv.conf</TT
>, and enable search list
processing as if the <TT
CLASS="PARAMETER"
><I
>+search</I
></TT
> option were given.</P
></DD
><DT
><TT
CLASS="OPTION"
>+[no]search</TT
></DT
><DD
><P
>Use [do not use] the search list defined by the searchlist or domain
directive in <TT
CLASS="FILENAME"
>resolv.conf</TT
> (if any).
The search list is not used by default.</P
></DD
><DT
><TT
CLASS="OPTION"
>+[no]defname</TT
></DT
><DD
><P
>Deprecated, treated as a synonym for <TT
CLASS="PARAMETER"
><I
>+[no]search</I
></TT
></P
></DD
><DT
><TT
CLASS="OPTION"
>+[no]aaonly</TT
></DT
><DD
><P
>This option does nothing. It is provided for compatibilty with old
versions of <B
CLASS="COMMAND"
>dig</B
> where it set an unimplemented
resolver flag.</P
></DD
><DT
><TT
CLASS="OPTION"
>+[no]adflag</TT
></DT
><DD
><P
>Set [do not set] the AD (authentic data) bit in the query. The AD bit
currently has a standard meaning only in responses, not in queries,
but the ability to set the bit in the query is provided for
completeness.</P
></DD
><DT
><TT
CLASS="OPTION"
>+[no]cdflag</TT
></DT
><DD
><P
>Set [do not set] the CD (checking disabled) bit in the query. This
requests the server to not perform DNSSEC validation of responses.</P
></DD
><DT
><TT
CLASS="OPTION"
>+[no]recursive</TT
></DT
><DD
><P
>Toggle the setting of the RD (recursion desired) bit in the query.
This bit is set by default, which means <B
CLASS="COMMAND"
>dig</B
>
normally sends recursive queries. Recursion is automatically disabled
when the <TT
CLASS="PARAMETER"
><I
>+nssearch</I
></TT
> or
<TT
CLASS="PARAMETER"
><I
>+trace</I
></TT
> query options are used.</P
></DD
><DT
><TT
CLASS="OPTION"
>+[no]nssearch</TT
></DT
><DD
><P
>When this option is set, <B
CLASS="COMMAND"
>dig</B
> attempts to find the
authoritative name servers for the zone containing the name being
looked up and display the SOA record that each name server has for the
zone.</P
></DD
><DT
><TT
CLASS="OPTION"
>+[no]trace</TT
></DT
><DD
><P
>Toggle tracing of the delegation path from the root name servers for
the name being looked up. Tracing is disabled by default. When
tracing is enabled, <B
CLASS="COMMAND"
>dig</B
> makes iterative queries to
resolve the name being looked up. It will follow referrals from the
root servers, showing the answer from each server that was used to
resolve the lookup.</P
></DD
><DT
><TT
CLASS="OPTION"
>+[no]cmd</TT
></DT
><DD
><P
>toggles the printing of the initial comment in the output identifying
the version of <B
CLASS="COMMAND"
>dig</B
> and the query options that have
been applied. This comment is printed by default.</P
></DD
><DT
><TT
CLASS="OPTION"
>+[no]short</TT
></DT
><DD
><P
>Provide a terse answer. The default is to print the answer in a
verbose form.</P
></DD
><DT
><TT
CLASS="OPTION"
>+[no]identify</TT
></DT
><DD
><P
>Show [or do not show] the IP address and port number that supplied the
answer when the <TT
CLASS="PARAMETER"
><I
>+short</I
></TT
> option is enabled. If
short form answers are requested, the default is not to show the
source address and port number of the server that provided the answer.</P
></DD
><DT
><TT
CLASS="OPTION"
>+[no]comments</TT
></DT
><DD
><P
>Toggle the display of comment lines in the output. The default is to
print comments.</P
></DD
><DT
><TT
CLASS="OPTION"
>+[no]stats</TT
></DT
><DD
><P
>This query option toggles the printing of statistics: when the query
was made, the size of the reply and so on. The default behaviour is
to print the query statistics.</P
></DD
><DT
><TT
CLASS="OPTION"
>+[no]qr</TT
></DT
><DD
><P
>Print [do not print] the query as it is sent.
By default, the query is not printed.</P
></DD
><DT
><TT
CLASS="OPTION"
>+[no]question</TT
></DT
><DD
><P
>Print [do not print] the question section of a query when an answer is
returned. The default is to print the question section as a comment.</P
></DD
><DT
><TT
CLASS="OPTION"
>+[no]answer</TT
></DT
><DD
><P
>Display [do not display] the answer section of a reply. The default
is to display it.</P
></DD
><DT
><TT
CLASS="OPTION"
>+[no]authority</TT
></DT
><DD
><P
>Display [do not display] the authority section of a reply. The
default is to display it.</P
></DD
><DT
><TT
CLASS="OPTION"
>+[no]additional</TT
></DT
><DD
><P
>Display [do not display] the additional section of a reply.
The default is to display it.</P
></DD
><DT
><TT
CLASS="OPTION"
>+[no]all</TT
></DT
><DD
><P
>Set or clear all display flags.</P
></DD
><DT
><TT
CLASS="OPTION"
>+time=T</TT
></DT
><DD
><P
>&#13;Sets the timeout for a query to
<TT
CLASS="PARAMETER"
><I
>T</I
></TT
> seconds. The default time out is 5 seconds.
An attempt to set <TT
CLASS="PARAMETER"
><I
>T</I
></TT
> to less than 1 will result
in a query timeout of 1 second being applied.</P
></DD
><DT
><TT
CLASS="OPTION"
>+tries=A</TT
></DT
><DD
><P
>Sets the number of times to retry UDP queries to server to
<TT
CLASS="PARAMETER"
><I
>T</I
></TT
> instead of the default, 3. If
<TT
CLASS="PARAMETER"
><I
>T</I
></TT
> is less than or equal to zero, the number of
retries is silently rounded up to 1.</P
></DD
><DT
><TT
CLASS="OPTION"
>+ndots=D</TT
></DT
><DD
><P
>Set the number of dots that have to appear in
<TT
CLASS="PARAMETER"
><I
>name</I
></TT
> to <TT
CLASS="PARAMETER"
><I
>D</I
></TT
> for it to be
considered absolute. The default value is that defined using the
ndots statement in <TT
CLASS="FILENAME"
>/etc/resolv.conf</TT
>, or 1 if no
ndots statement is present. Names with fewer dots are interpreted as
relative names and will be searched for in the domains listed in the
<TT
CLASS="OPTION"
>search</TT
> or <TT
CLASS="OPTION"
>domain</TT
> directive in
<TT
CLASS="FILENAME"
>/etc/resolv.conf</TT
>.</P
></DD
><DT
><TT
CLASS="OPTION"
>+bufsize=B</TT
></DT
><DD
><P
>Set the UDP message buffer size advertised using EDNS0 to
<TT
CLASS="PARAMETER"
><I
>B</I
></TT
> bytes. The maximum and minimum sizes of this
buffer are 65535 and 0 respectively. Values outside this range are
rounded up or down appropriately.</P
></DD
></DL
></DIV
>&#13;</P
></DIV
><DIV
CLASS="REFSECT1"
><A
NAME="AEN314"
></A
><H2
>MULTIPLE QUERIES</H2
><P
>The BIND 9 implementation of <B
CLASS="COMMAND"
>dig </B
> supports
specifying multiple queries on the command line (in addition to
supporting the <TT
CLASS="OPTION"
>-f</TT
> batch file option). Each of those
queries can be supplied with its own set of flags, options and query
options.</P
><P
>In this case, each <TT
CLASS="PARAMETER"
><I
>query</I
></TT
> argument represent an
individual query in the command-line syntax described above. Each
consists of any of the standard options and flags, the name to be
looked up, an optional query type and class and any query options that
should be applied to that query.</P
><P
>A global set of query options, which should be applied to all queries,
can also be supplied. These global query options must precede the
first tuple of name, class, type, options, flags, and query options
supplied on the command line. Any global query options can be
overridden by a query-specific set of query options. For example:
<PRE
CLASS="PROGRAMLISTING"
>dig +qr www.isc.org any -x 127.0.0.1 isc.org ns +noqr</PRE
>
shows how <B
CLASS="COMMAND"
>dig</B
> could be used from the command line
to make three lookups: an ANY query for <TT
CLASS="LITERAL"
>www.isc.org</TT
>, a
reverse lookup of 127.0.0.1 and a query for the NS records of
<TT
CLASS="LITERAL"
>isc.org</TT
>.
A global query option of <TT
CLASS="PARAMETER"
><I
>+qr</I
></TT
> is applied, so
that <B
CLASS="COMMAND"
>dig</B
> shows the initial query it made for each
lookup. The final query has a local query option of
<TT
CLASS="PARAMETER"
><I
>+noqr</I
></TT
> which means that <B
CLASS="COMMAND"
>dig</B
>
will not print the initial query when it looks up the NS records for
<TT
CLASS="LITERAL"
>isc.org</TT
>.</P
></DIV
><DIV
CLASS="REFSECT1"
><A
NAME="AEN331"
></A
><H2
>FILES</H2
><P
><TT
CLASS="FILENAME"
>/etc/resolv.conf</TT
></P
></DIV
><DIV
CLASS="REFSECT1"
><A
NAME="AEN335"
></A
><H2
>SEE ALSO</H2
><P
><SPAN
CLASS="CITEREFENTRY"
><SPAN
CLASS="REFENTRYTITLE"
>host</SPAN
>(1)</SPAN
>,
<SPAN
CLASS="CITEREFENTRY"
><SPAN
CLASS="REFENTRYTITLE"
>named</SPAN
>(8)</SPAN
>,
<SPAN
CLASS="CITEREFENTRY"
><SPAN
CLASS="REFENTRYTITLE"
>dnssec-keygen</SPAN
>(8)</SPAN
>,
<I
CLASS="CITETITLE"
>RFC1035</I
>.</P
></DIV
><DIV
CLASS="REFSECT1"
><A
NAME="AEN348"
></A
><H2
>BUGS </H2
><P
>There are probably too many query options. </P
></DIV
></BODY
></HTML
>