4552N/A - Copyright (C) 2004-2013 Internet Systems Consortium, Inc. ("ISC") 0N/A - Copyright (C) 2000-2003 Internet Software Consortium. 0N/A - Permission to use, copy, modify, and/or distribute this software for any 0N/A - purpose with or without fee is hereby granted, provided that the above 0N/A - copyright notice and this permission notice appear in all copies. 0N/A - THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH 0N/A - REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY 0N/A - AND FITNESS. IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT, 0N/A - INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM 0N/A - LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE 0N/A - OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR 0N/A - PERFORMANCE OF THIS SOFTWARE. 1472N/A<
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1879N/A<
tr><
th colspan="3" align="center">dig</
th></
tr>
1879N/A<
td width="20%" align="left">
1879N/A<
th width="60%" align="center">Manual pages</
th>
0N/A<
div class="refentry" lang="en">
0N/A<
a name="man.dig"></
a><
div class="titlepage"></
div>
0N/A<
div class="refnamediv">
0N/A<
p>dig — DNS lookup utility</
p>
0N/A<
div class="refsynopsisdiv">
0N/A<
div class="cmdsynopsis"><
p><
code class="command">dig</
code> [@server] [<
code class="option">-b <
em class="replaceable"><
code>address</
code></
em></
code>] [<
code class="option">-c <
em class="replaceable"><
code>class</
code></
em></
code>] [<
code class="option">-f <
em class="replaceable"><
code>filename</
code></
em></
code>] [<
code class="option">-k <
em class="replaceable"><
code>filename</
code></
em></
code>] [<
code class="option">-m</
code>] [<
code class="option">-p <
em class="replaceable"><
code>port#</
code></
em></
code>] [<
code class="option">-q <
em class="replaceable"><
code>name</
code></
em></
code>] [<
code class="option">-t <
em class="replaceable"><
code>type</
code></
em></
code>] [<
code class="option">-x <
em class="replaceable"><
code>addr</
code></
em></
code>] [<
code class="option">-y <
em class="replaceable"><
code>[<
span class="optional">hmac:</
span>]name:key</
code></
em></
code>] [<
code class="option">-4</
code>] [<
code class="option">-6</
code>] [name] [type] [class] [queryopt...]</
p></
div>
0N/A<
div class="cmdsynopsis"><
p><
code class="command">dig</
code> [<
code class="option">-h</
code>]</
p></
div>
0N/A<
div class="cmdsynopsis"><
p><
code class="command">dig</
code> [global-queryopt...] [query...]</
p></
div>
0N/A<
div class="refsect1" lang="en">
0N/A<
a name="id2613099"></
a><
h2>DESCRIPTION</
h2>
0N/A<
p><
span><
strong class="command">dig</
strong></
span>
0N/A (domain information groper) is a flexible tool
0N/A for interrogating DNS name servers. It performs DNS lookups and
0N/A displays the answers that are returned from the name server(s) that
0N/A were queried. Most DNS administrators use <
span><
strong class="command">dig</
strong></
span> to
0N/A troubleshoot DNS problems because of its flexibility, ease of use and
0N/A clarity of output. Other lookup tools tend to have less functionality
0N/A than <
span><
strong class="command">dig</
strong></
span>.
0N/A Although <
span><
strong class="command">dig</
strong></
span> is normally used with
21N/A arguments, it also has a batch mode of operation for reading lookup
0N/A requests from a file. A brief summary of its command-line arguments
0N/A and options is printed when the <
code class="option">-h</
code> option is given.
0N/A Unlike earlier versions, the BIND 9 implementation of
0N/A <
span><
strong class="command">dig</
strong></
span> allows multiple lookups to be issued
0N/A Unless it is told to query a specific name server,
0N/A <
span><
strong class="command">dig</
strong></
span> will try each of the servers listed in
0N/A are found, <
span><
strong class="command">dig</
strong></
span> will send the query to the local
0N/A When no command line arguments or options are given,
0N/A <
span><
strong class="command">dig</
strong></
span> will perform an NS query for "." (the root).
0N/A It is possible to set per-user defaults for <
span><
strong class="command">dig</
strong></
span> via
0N/A <
code class="filename">${HOME}/.digrc</
code>. This file is read and
0N/A are applied before the command line arguments.
3863N/A The IN and CH class names overlap with the IN and CH top level
3863N/A domains names. Either use the <
code class="option">-t</
code> and
3863N/A <
code class="option">-c</
code> options to specify the type and class,
0N/A use the <
code class="option">-q</
code> the specify the domain name, or
0N/A use "IN." and "CH." when looking up these top level domains.
0N/A<
div class="refsect1" lang="en">
0N/A<
a name="id2613475"></
a><
h2>SIMPLE USAGE</
h2>
0N/A A typical invocation of <
span><
strong class="command">dig</
strong></
span> looks like:
0N/A<
pre class="programlisting"> dig @server name type </
pre>
0N/A<
div class="variablelist"><
dl>
0N/A<
dt><
span class="term"><
code class="constant">server</
code></
span></
dt>
0N/A is the name or IP address of the name server to query. This
4552N/A can be an IPv4 address in dotted-decimal notation or an IPv6
4552N/A address in colon-delimited notation. When the supplied
3863N/A <
em class="parameter"><
code>server</
code></
em> argument is a hostname,
0N/A <
span><
strong class="command">dig</
strong></
span> resolves that name before querying
0N/A If no <
em class="parameter"><
code>server</
code></
em> argument is
3863N/A provided, <
span><
strong class="command">dig</
strong></
span> consults
3863N/A address is found there, it queries the name server at
0N/A that address. If either of the <
code class="option">-4</
code> or
3863N/A <
code class="option">-6</
code> options are in use, then
0N/A only addresses for the corresponding transport
0N/A will be tried. If no usable addresses are found,
0N/A <
span><
strong class="command">dig</
strong></
span> will send the query to the
0N/A local host. The reply from the name server that
0N/A responds is displayed.
0N/A<
dt><
span class="term"><
code class="constant">name</
code></
span></
dt>
0N/A is the name of the resource record that is to be looked up.
0N/A<
dt><
span class="term"><
code class="constant">type</
code></
span></
dt>
0N/A indicates what type of query is required —
0N/A ANY, A, MX, SIG, etc.
0N/A <
em class="parameter"><
code>type</
code></
em> can be any valid query
0N/A <
em class="parameter"><
code>type</
code></
em> argument is supplied,
0N/A <
span><
strong class="command">dig</
strong></
span> will perform a lookup for an
0N/A<
div class="refsect1" lang="en">
0N/A<
a name="id2613669"></
a><
h2>OPTIONS</
h2>
0N/A The <
code class="option">-b</
code> option sets the source IP address of the query
0N/A to <
em class="parameter"><
code>address</
code></
em>. This must be a valid
0N/A one of the host's network interfaces or "0.0.0.0" or "::". An optional
0N/A may be specified by appending "#<port>"
0N/A The default query class (IN for internet) is overridden by the
0N/A <
code class="option">-c</
code> option. <
em class="parameter"><
code>class</
code></
em> is
0N/A class, such as HS for Hesiod records or CH for Chaosnet records.
0N/A The <
code class="option">-f</
code> option makes <
span><
strong class="command">dig </
strong></
span>
0N/A in batch mode by reading a list of lookup requests to process from the
0N/A file <
em class="parameter"><
code>filename</
code></
em>. The file contains a
0N/A queries, one per line. Each entry in the file should be organized in
0N/A the same way they would be presented as queries to
0N/A <
span><
strong class="command">dig</
strong></
span> using the command-line interface.
0N/A The <
code class="option">-m</
code> option enables memory usage debugging.
0N/A If a non-standard port number is to be queried, the
0N/A <
code class="option">-p</
code> option is used. <
em class="parameter"><
code>port#</
code></
em> is
0N/A the port number that <
span><
strong class="command">dig</
strong></
span> will send its
0N/A instead of the standard DNS port number 53. This option would be used
0N/A to test a name server that has been configured to listen for queries
0N/A on a non-standard port number.
0N/A The <
code class="option">-4</
code> option forces <
span><
strong class="command">dig</
strong></
span>
0N/A use IPv4 query transport. The <
code class="option">-6</
code> option forces
0N/A <
span><
strong class="command">dig</
strong></
span> to only use IPv6 query transport.
0N/A The <
code class="option">-t</
code> option sets the query type to
0N/A <
em class="parameter"><
code>type</
code></
em>. It can be any valid query type
0N/A supported in BIND 9. The default query type is "A", unless the
0N/A <
code class="option">-x</
code> option is supplied to indicate a reverse lookup.
0N/A A zone transfer can be requested by specifying a type of AXFR. When
0N/A an incremental zone transfer (IXFR) is required,
0N/A <
em class="parameter"><
code>type</
code></
em> is set to <
code class="literal">ixfr=N</
code>.
0N/A The incremental zone transfer will contain the changes made to the zone
0N/A since the serial number in the zone's SOA record was
0N/A <
em class="parameter"><
code>N</
code></
em>.
0N/A The <
code class="option">-q</
code> option sets the query name to
0N/A <
em class="parameter"><
code>name</
code></
em>. This useful do distinguish the
208N/A <
em class="parameter"><
code>name</
code></
em> from other arguments.
6N/A Reverse lookups — mapping addresses to names — are simplified by the
0N/A <
code class="option">-x</
code> option. <
em class="parameter"><
code>addr</
code></
em> is
0N/A address in dotted-decimal notation, or a colon-delimited IPv6 address.
0N/A When this option is used, there is no need to provide the
0N/A <
em class="parameter"><
code>name</
code></
em>, <
em class="parameter"><
code>class</
code></
em> and
0N/A <
em class="parameter"><
code>type</
code></
em> arguments. <
span><
strong class="command">dig</
strong></
span>
0N/A automatically performs a lookup for a name like
0N/A class to PTR and IN respectively. By default, IPv6 addresses are
0N/A looked up using nibble format under the
IP6.ARPA domain.
0N/A To use the older RFC1886 method using the
IP6.INT domain
6N/A specify the <
code class="option">-i</
code> option. Bit string labels (RFC2874)
208N/A are now experimental and are not attempted.
0N/A To sign the DNS queries sent by <
span><
strong class="command">dig</
strong></
span> and
581N/A responses using transaction signatures (TSIG), specify a TSIG key file
581N/A using the <
code class="option">-k</
code> option. You can also specify the TSIG
208N/A key itself on the command line using the <
code class="option">-y</
code> option;
208N/A <
em class="parameter"><
code>hmac</
code></
em> is the type of the TSIG, default HMAC-MD5,
208N/A <
em class="parameter"><
code>name</
code></
em> is the name of the TSIG key and
208N/A <
em class="parameter"><
code>key</
code></
em> is the actual key. The key is a
581N/A encoded string, typically generated by
581N/A <
span class="citerefentry"><
span class="refentrytitle">dnssec-keygen</
span>(8)</
span>.
581N/A Caution should be taken when using the <
code class="option">-y</
code> option on
581N/A multi-user systems as the key can be visible in the output from
581N/A <
span class="citerefentry"><
span class="refentrytitle">ps</
span>(1)</
span>
581N/A or in the shell's history file. When
208N/A using TSIG authentication with <
span><
strong class="command">dig</
strong></
span>, the name
208N/A server that is queried needs to know the key and algorithm that is
581N/A being used. In BIND, this is done by providing appropriate
581N/A <
span><
strong class="command">key</
strong></
span> and <
span><
strong class="command">server</
strong></
span> statements in
208N/A<
div class="refsect1" lang="en">
208N/A<
a name="id2666030"></
a><
h2>QUERY OPTIONS</
h2>
208N/A<
p><
span><
strong class="command">dig</
strong></
span>
208N/A provides a number of query options which affect
208N/A the way in which lookups are made and the results displayed. Some of
208N/A these set or reset flag bits in the query header, some determine which
208N/A sections of the answer get printed, and others determine the timeout
208N/A Each query option is identified by a keyword preceded by a plus sign
208N/A (<
code class="literal">+</
code>). Some keywords set or reset an
208N/A option. These may be preceded
0N/A by the string <
code class="literal">no</
code> to negate the meaning of
887N/A keywords assign values to options like the timeout interval. They
887N/A have the form <
code class="option">+keyword=value</
code>.
887N/A<
div class="variablelist"><
dl>
887N/A<
dt><
span class="term"><
code class="option">+[no]tcp</
code></
span></
dt>
887N/A Use [do not use] TCP when querying name servers. The default
208N/A behavior is to use UDP unless an AXFR or IXFR query is
0N/A which case a TCP connection is used.
0N/A<
dt><
span class="term"><
code class="option">+[no]vc</
code></
span></
dt>
0N/A Use [do not use] TCP when querying name servers. This alternate
4552N/A syntax to <
em class="parameter"><
code>+[no]tcp</
code></
em> is
4552N/A compatibility. The "vc" stands for "virtual circuit".
0N/A<
dt><
span class="term"><
code class="option">+[no]ignore</
code></
span></
dt>
0N/A Ignore truncation in UDP responses instead of retrying with TCP.
0N/A default, TCP retries are performed.
0N/A<
dt><
span class="term"><
code class="option">+domain=somename</
code></
span></
dt>
1532N/A Set the search list to contain the single domain
1532N/A <
em class="parameter"><
code>somename</
code></
em>, as if specified in
1532N/A <
span><
strong class="command">domain</
strong></
span> directive in
1532N/A processing as if the <
em class="parameter"><
code>+search</
code></
em>
1532N/A<
dt><
span class="term"><
code class="option">+[no]search</
code></
span></
dt>
1532N/A Use [do not use] the search list defined by the searchlist or
0N/A The search list is not used by default.
0N/A<
dt><
span class="term"><
code class="option">+[no]showsearch</
code></
span></
dt>
1532N/A Perform [do not perform] a search showing intermediate
1532N/A<
dt><
span class="term"><
code class="option">+[no]defname</
code></
span></
dt>
1532N/A Deprecated, treated as a synonym for <
em class="parameter"><
code>+[no]search</
code></
em>
1532N/A<
dt><
span class="term"><
code class="option">+[no]aaonly</
code></
span></
dt>
1532N/A Sets the "aa" flag in the query.
1532N/A<
dt><
span class="term"><
code class="option">+[no]aaflag</
code></
span></
dt>
0N/A A synonym for <
em class="parameter"><
code>+[no]aaonly</
code></
em>.
0N/A<
dt><
span class="term"><
code class="option">+[no]adflag</
code></
span></
dt>
0N/A Set [do not set] the AD (authentic data) bit in the
0N/A query. This requests the server to return whether
0N/A all of the answer and authority sections have all
489N/A been validated as secure according to the security
0N/A policy of the server. AD=1 indicates that all records
208N/A have been validated as secure and the answer is not
208N/A from a OPT-OUT range. AD=0 indicate that some part
208N/A of the answer was insecure or not validated. This
208N/A<
dt><
span class="term"><
code class="option">+[no]cdflag</
code></
span></
dt>
208N/A Set [do not set] the CD (checking disabled) bit in the query.
208N/A requests the server to not perform DNSSEC validation of
208N/A<
dt><
span class="term"><
code class="option">+[no]cl</
code></
span></
dt>
208N/A Display [do not display] the CLASS when printing the record.
208N/A<
dt><
span class="term"><
code class="option">+[no]ttlid</
code></
span></
dt>
208N/A Display [do not display] the TTL when printing the record.
0N/A<
dt><
span class="term"><
code class="option">+[no]recurse</
code></
span></
dt>
0N/A Toggle the setting of the RD (recursion desired) bit
0N/A in the query. This bit is set by default, which means
0N/A <
span><
strong class="command">dig</
strong></
span> normally sends recursive
0N/A queries. Recursion is automatically disabled when
0N/A the <
em class="parameter"><
code>+nssearch</
code></
em> or
0N/A <
em class="parameter"><
code>+trace</
code></
em> query options are used.
0N/A<
dt><
span class="term"><
code class="option">+[no]nssearch</
code></
span></
dt>
0N/A When this option is set, <
span><
strong class="command">dig</
strong></
span>
0N/A attempts to find the
0N/A authoritative name servers for the zone containing the name
0N/A looked up and display the SOA record that each name server has
0N/A<
dt><
span class="term"><
code class="option">+[no]trace</
code></
span></
dt>
0N/A Toggle tracing of the delegation path from the root
0N/A name servers for the name being looked up. Tracing
0N/A is disabled by default. When tracing is enabled,
0N/A <
span><
strong class="command">dig</
strong></
span> makes iterative queries to
0N/A resolve the name being looked up. It will follow
0N/A referrals from the root servers, showing the answer
1532N/A from each server that was used to resolve the lookup.
0N/A <
span><
strong class="command">+dnssec</
strong></
span> is also set when +trace is
0N/A set to better emulate the default queries from a nameserver.
0N/A<
dt><
span class="term"><
code class="option">+[no]cmd</
code></
span></
dt>
113N/A Toggles the printing of the initial comment in the output
0N/A the version of <
span><
strong class="command">dig</
strong></
span> and the query
616N/A been applied. This comment is printed by default.
616N/A<
dt><
span class="term"><
code class="option">+[no]short</
code></
span></
dt>
616N/A Provide a terse answer. The default is to print the answer in a
616N/A<
dt><
span class="term"><
code class="option">+[no]identify</
code></
span></
dt>
616N/A Show [or do not show] the IP address and port number that
616N/A answer when the <
em class="parameter"><
code>+short</
code></
em> option
0N/A short form answers are requested, the default is not to show the
342N/A source address and port number of the server that provided the
616N/A<
dt><
span class="term"><
code class="option">+[no]comments</
code></
span></
dt>
616N/A Toggle the display of comment lines in the output. The default
616N/A<
dt><
span class="term"><
code class="option">+[no]rrcomments</
code></
span></
dt>
616N/A Toggle the display of per-record comments in the output (for
616N/A example, human-readable key information about DNSKEY records).
616N/A The default is not to print record comments unless multiline
616N/A<
dt><
span class="term"><
code class="option">+split=W</
code></
span></
dt>
342N/A Split long hex- or base64-formatted fields in resource
342N/A records into chunks of <
em class="parameter"><
code>W</
code></
em> characters
342N/A (where <
em class="parameter"><
code>W</
code></
em> is rounded up to the nearest
616N/A <
em class="parameter"><
code>+nosplit</
code></
em> or
616N/A <
em class="parameter"><
code>+split=0</
code></
em> causes fields not to be
616N/A split at all. The default is 56 characters, or 44 characters
616N/A when multiline mode is active.
616N/A<
dt><
span class="term"><
code class="option">+[no]stats</
code></
span></
dt>
616N/A This query option toggles the printing of statistics: when the
616N/A was made, the size of the reply and so on. The default
616N/A to print the query statistics.
616N/A<
dt><
span class="term"><
code class="option">+[no]qr</
code></
span></
dt>
616N/A Print [do not print] the query as it is sent.
616N/A By default, the query is not printed.
616N/A<
dt><
span class="term"><
code class="option">+[no]question</
code></
span></
dt>
2384N/A Print [do not print] the question section of a query when an
2454N/A returned. The default is to print the question section as a
2941N/A<
dt><
span class="term"><
code class="option">+[no]answer</
code></
span></
dt>
2941N/A Display [do not display] the answer section of a reply. The
2941N/A<
dt><
span class="term"><
code class="option">+[no]authority</
code></
span></
dt>
2941N/A Display [do not display] the authority section of a reply. The
2941N/A<
dt><
span class="term"><
code class="option">+[no]additional</
code></
span></
dt>
2941N/A Display [do not display] the additional section of a reply.
2941N/A The default is to display it.
2941N/A<
dt><
span class="term"><
code class="option">+[no]all</
code></
span></
dt>
2941N/A Set or clear all display flags.
2941N/A<
dt><
span class="term"><
code class="option">+time=T</
code></
span></
dt>
2941N/A Sets the timeout for a query to
2941N/A <
em class="parameter"><
code>T</
code></
em> seconds. The default
2941N/A An attempt to set <
em class="parameter"><
code>T</
code></
em> to less
2941N/A in a query timeout of 1 second being applied.
2941N/A<
dt><
span class="term"><
code class="option">+tries=T</
code></
span></
dt>
2941N/A Sets the number of times to try UDP queries to server to
2941N/A <
em class="parameter"><
code>T</
code></
em> instead of the default, 3.
2941N/A <
em class="parameter"><
code>T</
code></
em> is less than or equal to
2454N/A tries is silently rounded up to 1.
0N/A<
dt><
span class="term"><
code class="option">+retry=T</
code></
span></
dt>
0N/A Sets the number of times to retry UDP queries to server to
2384N/A <
em class="parameter"><
code>T</
code></
em> instead of the default, 2.
2454N/A <
em class="parameter"><
code>+tries</
code></
em>, this does not include
2454N/A<
dt><
span class="term"><
code class="option">+ndots=D</
code></
span></
dt>
2454N/A Set the number of dots that have to appear in
2454N/A <
em class="parameter"><
code>name</
code></
em> to <
em class="parameter"><
code>D</
code></
em> for it to be
0N/A considered absolute. The default value is that defined using
0N/A ndots statement is present. Names with fewer dots are
2384N/A relative names and will be searched for in the domains listed in
2384N/A <
code class="option">search</
code> or <
code class="option">domain</
code> directive in
2384N/A<
dt><
span class="term"><
code class="option">+bufsize=B</
code></
span></
dt>
2941N/A Set the UDP message buffer size advertised using EDNS0 to
2941N/A <
em class="parameter"><
code>B</
code></
em> bytes. The maximum and minimum sizes
2941N/A of this buffer are 65535 and 0 respectively. Values outside
0N/A this range are rounded up or down appropriately.
0N/A Values other than zero will cause a EDNS query to be sent.
0N/A<
dt><
span class="term"><
code class="option">+edns=#</
code></
span></
dt>
0N/A Specify the EDNS version to query with. Valid values
0N/A are 0 to 255. Setting the EDNS version will cause
0N/A a EDNS query to be sent. <
code class="option">+noedns</
code>
0N/A clears the remembered EDNS version. EDNS is set to
0N/A<
dt><
span class="term"><
code class="option">+[no]multiline</
code></
span></
dt>
0N/A Print records like the SOA records in a verbose multi-line
0N/A format with human-readable comments. The default is to print
0N/A each record on a single line, to facilitate machine parsing
0N/A of the <
span><
strong class="command">dig</
strong></
span> output.
0N/A<
dt><
span class="term"><
code class="option">+[no]onesoa</
code></
span></
dt>
0N/A Print only one (starting) SOA record when performing
0N/A an AXFR. The default is to print both the starting and
0N/A<
dt><
span class="term"><
code class="option">+[no]fail</
code></
span></
dt>
0N/A Do not try the next server if you receive a SERVFAIL. The
0N/A to not try the next server which is the reverse of normal stub
0N/A<
dt><
span class="term"><
code class="option">+[no]besteffort</
code></
span></
dt>
0N/A Attempt to display the contents of messages which are malformed.
0N/A The default is to not display malformed answers.
0N/A<
dt><
span class="term"><
code class="option">+[no]dnssec</
code></
span></
dt>
0N/A Requests DNSSEC records be sent by setting the DNSSEC OK bit
1091N/A in the OPT record in the additional section of the query.
0N/A<
dt><
span class="term"><
code class="option">+[no]sigchase</
code></
span></
dt>
0N/A Chase DNSSEC signature chains. Requires dig be compiled with
0N/A<
dt><
span class="term"><
code class="option">+trusted-key=####</
code></
span></
dt>
0N/A Specifies a file containing trusted keys to be used with
0N/A <
code class="option">+sigchase</
code>. Each DNSKEY record must be
0N/A If not specified, <
span><
strong class="command">dig</
strong></
span> will look for
0N/A Requires dig be compiled with -DDIG_SIGCHASE.
0N/A<
dt><
span class="term"><
code class="option">+[no]topdown</
code></
span></
dt>
0N/A When chasing DNSSEC signature chains perform a top-down
0N/A Requires dig be compiled with -DDIG_SIGCHASE.
342N/A<
dt><
span class="term"><
code class="option">+[no]nsid</
code></
span></
dt>
342N/A Include an EDNS name server ID request when sending a query.
0N/A<
div class="refsect1" lang="en">
0N/A<
a name="id2667101"></
a><
h2>MULTIPLE QUERIES</
h2>
0N/A The BIND 9 implementation of <
span><
strong class="command">dig </
strong></
span>
0N/A specifying multiple queries on the command line (in addition to
0N/A supporting the <
code class="option">-f</
code> batch file option). Each of those
0N/A queries can be supplied with its own set of flags, options and query
0N/A In this case, each <
em class="parameter"><
code>query</
code></
em> argument
0N/A individual query in the command-line syntax described above. Each
0N/A consists of any of the standard options and flags, the name to be
0N/A looked up, an optional query type and class and any query options that
0N/A should be applied to that query.
0N/A A global set of query options, which should be applied to all queries,
0N/A can also be supplied. These global query options must precede the
0N/A first tuple of name, class, type, options, flags, and query options
0N/A supplied on the command line. Any global query options (except
0N/A the <
code class="option">+[no]cmd</
code> option) can be
342N/A overridden by a query-specific set of query options. For example:
342N/A<
pre class="programlisting">
0N/A shows how <
span><
strong class="command">dig</
strong></
span> could be used from the
0N/A to make three lookups: an ANY query for <
code class="literal">
www.isc.org</
code>, a
0N/A reverse lookup of 127.0.0.1 and a query for the NS records of
0N/A A global query option of <
em class="parameter"><
code>+qr</
code></
em> is
0N/A that <
span><
strong class="command">dig</
strong></
span> shows the initial query it made
0N/A lookup. The final query has a local query option of
0N/A <
em class="parameter"><
code>+noqr</
code></
em> which means that <
span><
strong class="command">dig</
strong></
span>
0N/A will not print the initial query when it looks up the NS records for
342N/A<
div class="refsect1" lang="en">
0N/A<
a name="id2667323"></
a><
h2>IDN SUPPORT</
h2>
0N/A If <
span><
strong class="command">dig</
strong></
span> has been built with IDN (internationalized
0N/A domain name) support, it can accept and display non-ASCII domain names.
0N/A <
span><
strong class="command">dig</
strong></
span> appropriately converts character encoding of
0N/A domain name before sending a request to DNS server or displaying a
0N/A reply from the server.
0N/A If you'd like to turn off the IDN support for some reason, defines
0N/A the <
code class="envar">IDN_DISABLE</
code> environment variable.
0N/A The IDN support is disabled if the variable is set when
0N/A <
span><
strong class="command">dig</
strong></
span> runs.
0N/A<
div class="refsect1" lang="en">
0N/A<
a name="id2667352"></
a><
h2>FILES</
h2>
0N/A<
p><
code class="filename">${HOME}/.digrc</
code>
0N/A<
div class="refsect1" lang="en">
0N/A<
a name="id2667373"></
a><
h2>SEE ALSO</
h2>
0N/A<
p><
span class="citerefentry"><
span class="refentrytitle">host</
span>(1)</
span>,
0N/A <
span class="citerefentry"><
span class="refentrytitle">named</
span>(8)</
span>,
2414N/A <
span class="citerefentry"><
span class="refentrytitle">dnssec-keygen</
span>(8)</
span>,
2414N/A <
em class="citetitle">RFC1035</
em>.
2414N/A<
div class="refsect1" lang="en">
2414N/A<
a name="id2667411"></
a><
h2>BUGS</
h2>
2414N/A There are probably too many query options.
2414N/A<
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2414N/A<
td width="40%" align="left">
2414N/A<
td width="40%" align="left" valign="top">Manual pages�</
td>
0N/A<
td width="20%" align="center"><
a accesskey="h" href="Bv9ARM.html">Home</
a></
td>
940N/A<
td width="40%" align="right" valign="top">�host</
td>