dig.docbook

bind-3.2.

</para></listitem></varlistentry>

<varlistentry><term><option>+[no]search</option></term>
<listitem><para>
Use [do not use] the search list defined by the searchlist or domain
directive in <filename>resolv.conf</filename> (if any).
The search list is not used by default.
</para></listitem></varlistentry>

<varlistentry><term><option>+[no]defname</option></term>
<listitem><para>
Deprecated, treated as a synonym for <parameter>+[no]search</parameter>
</para></listitem></varlistentry>

<varlistentry><term><option>+[no]aaonly</option></term>
<listitem><para>
This option does nothing.  It is provided for compatibility with old
versions of <command>dig</command> where it set an unimplemented
resolver flag.
</para></listitem></varlistentry>

<varlistentry><term><option>+[no]adflag</option></term>
<listitem><para>
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.
</para></listitem></varlistentry>

<varlistentry><term><option>+[no]cdflag</option></term>
<listitem><para>
Set [do not set] the CD (checking disabled) bit in the query.  This
requests the server to not perform DNSSEC validation of responses.
</para></listitem></varlistentry>

<varlistentry><term><option>+[no]recurse</option></term>
<listitem><para>
Toggle the setting of the RD (recursion desired) bit in the query.
This bit is set by default, which means <command>dig</command>
normally sends recursive queries.  Recursion is automatically disabled
when the <parameter>+nssearch</parameter> or
<parameter>+trace</parameter> query options are used.
</para></listitem></varlistentry>

<varlistentry><term><option>+[no]nssearch</option></term>
<listitem><para>
When this option is set, <command>dig</command> 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.
</para></listitem></varlistentry>

<varlistentry><term><option>+[no]trace</option></term>
<listitem><para>
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, <command>dig</command> 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.
</para></listitem></varlistentry>

<varlistentry><term><option>+[no]cmd</option></term>
<listitem><para>
toggles the printing of the initial comment in the output identifying
the version of <command>dig</command> and the query options that have
been applied.  This comment is printed by default.
</para></listitem></varlistentry>

<varlistentry><term><option>+[no]short</option></term>
<listitem><para>
Provide a terse answer.  The default is to print the answer in a
verbose form.
</para></listitem></varlistentry>

<varlistentry><term><option>+[no]identify</option></term>
<listitem><para>
Show [or do not show] the IP address and port number that supplied the
answer when the <parameter>+short</parameter> 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.
</para></listitem></varlistentry>

<varlistentry><term><option>+[no]comments</option></term>
<listitem><para>
Toggle the display of comment lines in the output.  The default is to
print comments.
</para></listitem></varlistentry>

<varlistentry><term><option>+[no]stats</option></term>
<listitem><para>
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.
</para></listitem></varlistentry>

<varlistentry><term><option>+[no]qr</option></term>
<listitem><para>
Print [do not print] the query as it is sent.
By default, the query is not printed.
</para></listitem></varlistentry>

<varlistentry><term><option>+[no]question</option></term>
<listitem><para>
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.
</para></listitem></varlistentry>

<varlistentry><term><option>+[no]answer</option></term>
<listitem><para>
Display [do not display] the answer section of a reply.  The default
is to display it.
</para></listitem></varlistentry>

<varlistentry><term><option>+[no]authority</option></term>
<listitem><para>
Display [do not display] the authority section of a reply.  The
default is to display it.
</para></listitem></varlistentry>

<varlistentry><term><option>+[no]additional</option></term>
<listitem><para>
Display [do not display] the additional section of a reply.
The default is to display it.
</para></listitem></varlistentry>

<varlistentry><term><option>+[no]all</option></term>
<listitem><para>
Set or clear all display flags.
</para></listitem></varlistentry>

<varlistentry><term><option>+time=T</option></term>
<listitem><para>

Sets the timeout for a query to
<parameter>T</parameter> seconds.  The default time out is 5 seconds.
An attempt to set <parameter>T</parameter> to less than 1 will result
in a query timeout of 1 second being applied.
</para></listitem></varlistentry>

<varlistentry><term><option>+tries=T</option></term>
<listitem><para>
Sets the number of times to retry UDP queries to server to
<parameter>T</parameter> instead of the default, 3.  If
<parameter>T</parameter> is less than or equal to zero, the number of
retries is silently rounded up to 1.
</para></listitem></varlistentry>

<varlistentry><term><option>+ndots=D</option></term>
<listitem><para>
Set the number of dots that have to appear in
<parameter>name</parameter> to <parameter>D</parameter> for it to be
considered absolute.  The default value is that defined using the
ndots statement in <filename>/etc/resolv.conf</filename>, 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
<option>search</option> or <option>domain</option> directive in
<filename>/etc/resolv.conf</filename>.
</para></listitem></varlistentry>

<varlistentry><term><option>+bufsize=B</option></term>
<listitem><para>
Set the UDP message buffer size advertised using EDNS0 to
<parameter>B</parameter> bytes.  The maximum and minimum sizes of this
buffer are 65535 and 0 respectively.  Values outside this range are
rounded up or down appropriately.
</para>
</listitem></varlistentry>

<varlistentry><term><option>+[no]multiline</option></term>
<listitem><para>
Print records like the SOA records in a verbose multi-line
format with human-readable comments.  The default is to print
each record on a single line, to facilitate machine parsing 
of the <command>dig</command> output.
</para>
</listitem></varlistentry>

<varlistentry><term><option>+[no]fail</option></term>
<listitem><para>
Do not try the next server if you receive a SERVFAIL.  The default is
to not try the next server which is the reverse of normal stub resolver
behaviour.
</para>

</listitem></varlistentry>
<varlistentry><term><option>+[no]besteffort</option></term>
<listitem><para>
Attempt to display the contents of messages which are malformed.
The default is to not display malformed answers.
</para>

</listitem></varlistentry>
<varlistentry><term><option>+[no]dnssec</option></term>
<listitem><para>
Requests DNSSEC records be sent by setting the DNSSEC OK bit (DO)
in the OPT record in the additional section of the query.
</para>

</variablelist>

</para>
</refsect1>

<refsect1>
<title>MULTIPLE QUERIES</title>

<para>
The BIND 9 implementation of <command>dig </command> supports
specifying multiple queries on the command line (in addition to
supporting the <option>-f</option> batch file option).  Each of those
queries can be supplied with its own set of flags, options and query
options.
</para>

<para>
In this case, each <parameter>query</parameter> 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.
</para>

<para>
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 (except
the <option>+[no]cmd</option> option) can be
overridden by a query-specific set of query options.  For example:
<programlisting>
dig +qr www.isc.org any -x 127.0.0.1 isc.org ns +noqr
</programlisting>
shows how <command>dig</command> could be used from the command line
to make three lookups: an ANY query for <literal>www.isc.org</literal>, a
reverse lookup of 127.0.0.1 and a query for the NS records of
<literal>isc.org</literal>.

A global query option of <parameter>+qr</parameter> is applied, so
that <command>dig</command> shows the initial query it made for each
lookup.  The final query has a local query option of
<parameter>+noqr</parameter> which means that <command>dig</command>
will not print the initial query when it looks up the NS records for
<literal>isc.org</literal>.
</para>

</refsect1>

<refsect1>
<title>FILES</title>
<para>
<filename>/etc/resolv.conf</filename>
</para>
<para>
<filename>${HOME}/.digrc</filename>
</para>
</refsect1>

<refsect1>
<title>SEE ALSO</title>
<para>
<citerefentry>
<refentrytitle>host</refentrytitle><manvolnum>1</manvolnum>
</citerefentry>,
<citerefentry>
<refentrytitle>named</refentrytitle><manvolnum>8</manvolnum>
</citerefentry>,
<citerefentry>
<refentrytitle>dnssec-keygen</refentrytitle><manvolnum>8</manvolnum>
</citerefentry>,
<citetitle>RFC1035</citetitle>.
</para>
</refsect1>

<refsect1>
<title>BUGS </title>
<para>
There are probably too many query options. 
</para>
</refsect1>
</refentry>