Commit 3241ddcf authored by Tinderbox User's avatar Tinderbox User

regen master

parent 21635968
.\" Copyright (C) 2004, 2005, 2007-2009, 2014, 2015 Internet Systems Consortium, Inc. ("ISC")
.\" Copyright (C) 2004, 2005, 2007-2009, 2014-2016 Internet Systems Consortium, Inc. ("ISC")
.\" Copyright (C) 2000-2002 Internet Software Consortium.
.\"
.\" Permission to use, copy, modify, and/or distribute this software for any
......@@ -65,59 +65,74 @@ is an optional argument which is either the name or IP address of the name serve
\fBhost\fR
should query instead of the server or servers listed in
/etc/resolv\&.conf\&.
.SH "OPTIONS"
.PP
The
\-4
.RS 4
Use IPv4 only for query transport\&. See also the
\fB\-6\fR
option\&.
.RE
.PP
\-6
.RS 4
Use IPv6 only for query transport\&. See also the
\fB\-4\fR
option\&.
.RE
.PP
\-a
.RS 4
"All"\&. The
\fB\-a\fR
(all) option is equivalent to setting the
\fB\-v\fR
option and asking
\fBhost\fR
to make a query of type ANY\&.
option is normally equivalent to
\fB\-v\fR\fB\-t\fRANY\&. It also affects the behaviour of the
\fB\-l\fR
list zone option\&.
.RE
.PP
When the
\fB\-C\fR
option is used,
\-c \fIclass\fR
.RS 4
Query class: This can be used to lookup Hesiod or Chaosnet class resource records\&. The default class is IN (Internet)\&.
.RE
.PP
\-C
.RS 4
Check consistency:
\fBhost\fR
will attempt to display the SOA records for zone
will query the SOA records for zone
\fIname\fR
from all the listed authoritative name servers for that zone\&. The list of name servers is defined by the NS records that are found for the zone\&.
.RE
.PP
The
\fB\-c\fR
option instructs to make a DNS query of class
\fIclass\fR\&. This can be used to lookup Hesiod or Chaosnet class resource records\&. The default class is IN (Internet)\&.
.PP
Verbose output is generated by
\fBhost\fR
when the
\fB\-d\fR
or
\-d
.RS 4
Print debugging traces\&. Equivalent to the
\fB\-v\fR
option is used\&. The two options are equivalent\&. They have been provided for backwards compatibility\&. In previous versions, the
\fB\-d\fR
option switched on debugging traces and
\fB\-v\fR
enabled verbose output\&. Verbose output can also be enabled by setting the
\fIdebug\fR
option in
/etc/resolv\&.conf\&.
verbose option\&.
.RE
.PP
List mode is selected by the
\fB\-l\fR
option\&. This makes
\fBhost\fR
perform a zone transfer for zone
\fIname\fR\&. Transfer the zone printing out the NS, PTR and address records (A/AAAA)\&. If combined with
\fB\-a\fR
all records will be printed\&.
\-i
.RS 4
Obsolete\&. Use the IP6\&.INT domain for reverse lookups of IPv6 addresses as defined in RFC1886 and deprecated in RFC4159\&. The default is to use IP6\&.ARPA as specified in RFC3596\&.
.RE
.PP
The
\fB\-i\fR
option specifies that reverse lookups of IPv6 addresses should use the IP6\&.INT domain as defined in RFC1886\&. The default is to use IP6\&.ARPA\&.
\-l
.RS 4
List zone: The
\fBhost\fR
performs a zone transfer of zone
\fIname\fR
and prints out the NS, PTR and address records (A/AAAA)\&.
.sp
Together, the
\fB\-l\fR\fB\-a\fR
options print all records in the zone\&.
.RE
.PP
The
\fB\-N\fR
option sets the number of dots that have to be in
\-N \fIndots\fR
.RS 4
The number of dots that have to be in
\fIname\fR
for it to be considered absolute\&. The default value is that defined using the ndots statement in
/etc/resolv\&.conf, 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
......@@ -126,105 +141,116 @@ or
\fBdomain\fR
directive in
/etc/resolv\&.conf\&.
.RE
.PP
The number of UDP retries for a lookup can be changed with the
\fB\-R\fR
option\&.
\fInumber\fR
indicates how many times
\-r
.RS 4
Non\-recursive query: Setting this option clears the
\fBRD\fR
\(em recursion desired \(em bit in the query\&. This should mean that the name server receiving the query will not attempt to resolve
\fIname\fR\&. The
\fB\-r\fR
option enables
\fBhost\fR
will repeat a query that does not get answered\&. If
to mimic the behavior of a name server by making non\-recursive queries and expecting to receive answers to those queries that can be referrals to other name servers\&.
.RE
.PP
\-R \fInumber\fR
.RS 4
Number of retries for UDP queries: If
\fInumber\fR
is negative or zero, the number of retries will default to 1\&. The default value is 1, or the value of the
\fIattempts\fR
option in
/etc/resolv\&.conf, if set\&.
.RE
.PP
Non\-recursive queries can be made via the
\fB\-r\fR
option\&. Setting this option clears the
\fBRD\fR
\(em recursion desired \(em bit in the query which
\-s
.RS 4
Do
\fInot\fR
send the query to the next nameserver if any server responds with a SERVFAIL response, which is the reverse of normal stub resolver behavior\&.
.RE
.PP
\-t \fItype\fR
.RS 4
Query type: the
\fItype\fR
argument can be any recognized query type: CNAME, NS, SOA, TXT, DNSKEY, AXFR, etc\&.
.sp
When no query type is specified,
\fBhost\fR
makes\&. This should mean that the name server receiving the query will not attempt to resolve
\fIname\fR\&. The
\fB\-r\fR
option enables
automatically selects an appropriate query type\&. By default, it looks for A, AAAA, and MX records\&. If the
\fB\-C\fR
option is given, queries will be made for SOA records\&. If
\fIname\fR
is a dotted\-decimal IPv4 address or colon\-delimited IPv6 address,
\fBhost\fR
to mimic the behavior of a name server by making non\-recursive queries and expecting to receive answers to those queries that are usually referrals to other name servers\&.
will query for PTR records\&.
.sp
If a query type of IXFR is chosen the starting serial number can be specified by appending an equal followed by the starting serial number (e\&.g\&.
\fB\-t\fRIXFR=12345678)\&.
.RE
.PP
By default,
\-T
.RS 4
TCP: By default,
\fBhost\fR
uses UDP when making queries\&. The
\fB\-T\fR
option makes it use a TCP connection when querying the name server\&. TCP will be automatically selected for queries that require it, such as zone transfer (AXFR) requests\&.
.RE
.PP
The
\fB\-4\fR
option forces
\fBhost\fR
to only use IPv4 query transport\&. The
\fB\-6\fR
option forces
\fBhost\fR
to only use IPv6 query transport\&.
\-m \fIflag\fR
.RS 4
Memory usage debugging: the flag can be
\fIrecord\fR,
\fIusage\fR, or
\fItrace\fR\&. You can specify the
\fB\-m\fR
option more than once to set multiple flags\&.
.RE
.PP
The
\fB\-t\fR
option is used to select the query type\&.
\fItype\fR
can be any recognized query type: CNAME, NS, SOA, SIG, KEY, AXFR, etc\&. When no query type is specified,
\fBhost\fR
automatically selects an appropriate query type\&. By default, it looks for A, AAAA, and MX records, but if the
\fB\-C\fR
option was given, queries will be made for SOA records, and if
\fIname\fR
is a dotted\-decimal IPv4 address or colon\-delimited IPv6 address,
\fBhost\fR
will query for PTR records\&. If a query type of IXFR is chosen the starting serial number can be specified by appending an equal followed by the starting serial number (e\&.g\&. \-t IXFR=12345678)\&.
\-v
.RS 4
Verbose output\&. Equivalent to the
\fB\-d\fR
debug option\&. Verbose output can also be enabled by setting the
\fIdebug\fR
option in/etc/resolv\&.conf\&.
.RE
.PP
The time to wait for a reply can be controlled through the
\fB\-W\fR
and
\fB\-w\fR
options\&. The
\-V
.RS 4
Print the version number and exit\&.
.RE
.PP
\-w
.RS 4
Wait forever: the query timeout is set to the maximum possible\&. See also the
\fB\-W\fR
option makes
\fBhost\fR
wait for
option\&.
.RE
.PP
\-W \fIwait\fR
.RS 4
Timeout: wait for up to
\fIwait\fR
seconds\&. If
seconds for a reply\&. If
\fIwait\fR
is less than one, the wait interval is set to one second\&. When the
\fB\-w\fR
option is used,
\fBhost\fR
will effectively wait forever for a reply\&. The time to wait for a response will be set to the number of seconds given by the hardware\*(Aqs maximum value for an integer quantity\&. By default,
is less than one, the wait interval is set to one second\&.
.sp
By default,
\fBhost\fR
will wait for 5 seconds for UDP responses and 10 seconds for TCP connections\&. These defaults can be overridden by the
\fItimeout\fR
option in
/etc/resolv\&.conf\&.
.PP
The
\fB\-s\fR
option tells
\fBhost\fR\fInot\fR
to send the query to the next nameserver if any server responds with a SERVFAIL response, which is the reverse of normal stub resolver behavior\&.
.PP
The
\fB\-m\fR
can be used to set the memory usage debugging flags
\fIrecord\fR,
\fIusage\fR
and
\fItrace\fR\&.
.PP
The
\fB\-V\fR
option causes
\fBhost\fR
to print the version number and exit\&.
.sp
See also the
\fB\-w\fR
option\&.
.RE
.SH "IDN SUPPORT"
.PP
If
......@@ -248,7 +274,7 @@ runs\&.
\fBInternet Systems Consortium, Inc\&.\fR
.SH "COPYRIGHT"
.br
Copyright \(co 2004, 2005, 2007-2009, 2014, 2015 Internet Systems Consortium, Inc. ("ISC")
Copyright \(co 2004, 2005, 2007-2009, 2014-2016 Internet Systems Consortium, Inc. ("ISC")
.br
Copyright \(co 2000-2002 Internet Software Consortium.
.br
<!--
- Copyright (C) 2004, 2005, 2007-2009, 2014, 2015 Internet Systems Consortium, Inc. ("ISC")
- Copyright (C) 2004, 2005, 2007-2009, 2014-2016 Internet Systems Consortium, Inc. ("ISC")
- Copyright (C) 2000-2002 Internet Software Consortium.
-
- Permission to use, copy, modify, and/or distribute this software for any
......@@ -51,151 +51,187 @@
should query instead of the server or servers listed in
<code class="filename">/etc/resolv.conf</code>.
</p>
</div>
<div class="refsection">
<a name="id-1.8"></a><h2>OPTIONS</h2>
<div class="variablelist"><dl class="variablelist">
<dt><span class="term">-4</span></dt>
<dd><p>
Use IPv4 only for query transport.
See also the <code class="option">-6</code> option.
</p></dd>
<dt><span class="term">-6</span></dt>
<dd><p>
Use IPv6 only for query transport.
See also the <code class="option">-4</code> option.
</p></dd>
<dt><span class="term">-a</span></dt>
<dd><p>
"All". The <code class="option">-a</code> option is normally equivalent
to <code class="option">-v</code> <code class="option">-t</code> <code class="literal">ANY</code>.
It also affects the behaviour of the <code class="option">-l</code>
list zone option.
</p></dd>
<dt><span class="term">-c <em class="replaceable"><code>class</code></em></span></dt>
<dd><p>
Query class: This can be used to lookup Hesiod or Chaosnet
class resource records. The default class is IN
(Internet).
</p></dd>
<dt><span class="term">-C</span></dt>
<dd><p>
Check consistency: <span class="command"><strong>host</strong></span> will query the
SOA records for zone <em class="parameter"><code>name</code></em> from all
the listed authoritative name servers for that zone. The
list of name servers is defined by the NS records that are
found for the zone.
</p></dd>
<dt><span class="term">-d</span></dt>
<dd><p>
Print debugging traces.
Equivalent to the <code class="option">-v</code> verbose option.
</p></dd>
<dt><span class="term">-i</span></dt>
<dd><p>
Obsolete.
Use the IP6.INT domain for reverse lookups of IPv6
addresses as defined in RFC1886 and deprecated in RFC4159.
The default is to use IP6.ARPA as specified in RFC3596.
</p></dd>
<dt><span class="term">-l</span></dt>
<dd>
<p>
The <code class="option">-a</code> (all) option is equivalent to setting the
<code class="option">-v</code> option and asking <span class="command"><strong>host</strong></span> to make
a query of type ANY.
</p>
<p>
When the <code class="option">-C</code> option is used, <span class="command"><strong>host</strong></span>
will attempt to display the SOA records for zone
<em class="parameter"><code>name</code></em> from all the listed
authoritative name
servers for that zone. The list of name servers is defined by the NS
records that are found for the zone.
</p>
<p>
The <code class="option">-c</code> option instructs to make a DNS query of class
<em class="parameter"><code>class</code></em>. This can be used to lookup
Hesiod or
Chaosnet class resource records. The default class is IN (Internet).
</p>
<p>
Verbose output is generated by <span class="command"><strong>host</strong></span> when
the
<code class="option">-d</code> or <code class="option">-v</code> option is used. The two
options are equivalent. They have been provided for backwards
compatibility. In previous versions, the <code class="option">-d</code> option
switched on debugging traces and <code class="option">-v</code> enabled verbose
output. Verbose output can also be enabled by setting the
<em class="parameter"><code>debug</code></em> option in
<code class="filename">/etc/resolv.conf</code>.
</p>
<p>
List mode is selected by the <code class="option">-l</code> option. This makes
<span class="command"><strong>host</strong></span> perform a zone transfer for zone
<em class="parameter"><code>name</code></em>. Transfer the zone printing out
the NS, PTR
and address records (A/AAAA). If combined with <code class="option">-a</code>
all records will be printed.
</p>
<p>
The <code class="option">-i</code>
option specifies that reverse lookups of IPv6 addresses should
use the IP6.INT domain as defined in RFC1886.
The default is to use IP6.ARPA.
</p>
<p>
The <code class="option">-N</code> option sets the number of dots that have to be
in <em class="parameter"><code>name</code></em> for it to be considered
absolute. The
default value is that defined using the ndots statement in
<code class="filename">/etc/resolv.conf</code>, 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 <span class="type">search</span>
or <span class="type">domain</span> directive in
<code class="filename">/etc/resolv.conf</code>.
</p>
<p>
The number of UDP retries for a lookup can be changed with the
<code class="option">-R</code> option. <em class="parameter"><code>number</code></em>
indicates
how many times <span class="command"><strong>host</strong></span> will repeat a query
that does
not get answered. If
<em class="parameter"><code>number</code></em> is negative or zero, the
number of
retries will default to 1. The default value is 1, or
the value of the <em class="parameter"><code>attempts</code></em> option in
<code class="filename">/etc/resolv.conf</code>, if set.
</p>
<p>
Non-recursive queries can be made via the <code class="option">-r</code> option.
Setting this option clears the <span class="type">RD</span> &#8212; recursion
desired &#8212; bit in the query which <span class="command"><strong>host</strong></span> makes.
This should mean that the name server receiving the query will not
attempt to resolve <em class="parameter"><code>name</code></em>. The
<code class="option">-r</code> option enables <span class="command"><strong>host</strong></span>
to mimic
the behavior of a name server by making non-recursive queries and
expecting to receive answers to those queries that are usually
referrals to other name servers.
</p>
List zone:
The <span class="command"><strong>host</strong></span> performs a zone transfer of
zone <em class="parameter"><code>name</code></em> and prints out the NS,
PTR and address records (A/AAAA).
</p>
<p>
By default, <span class="command"><strong>host</strong></span> uses UDP when making
queries. The
<code class="option">-T</code> option makes it use a TCP connection when querying
the name server. TCP will be automatically selected for queries that
require it, such as zone transfer (AXFR) requests.
</p>
Together, the <code class="option">-l</code> <code class="option">-a</code>
options print all records in the zone.
</p>
</dd>
<dt><span class="term">-N <em class="replaceable"><code>ndots</code></em></span></dt>
<dd><p>
The number of dots that have to be
in <em class="parameter"><code>name</code></em> for it to be considered
absolute. The default value is that defined using the
ndots statement in <code class="filename">/etc/resolv.conf</code>,
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 <span class="type">search</span> or <span class="type">domain</span> directive
in <code class="filename">/etc/resolv.conf</code>.
</p></dd>
<dt><span class="term">-r</span></dt>
<dd><p>
Non-recursive query:
Setting this option clears the <span class="type">RD</span> &#8212;
recursion desired &#8212; bit in the query. This should
mean that the name server receiving the query will not
attempt to resolve <em class="parameter"><code>name</code></em>.
The <code class="option">-r</code> option
enables <span class="command"><strong>host</strong></span> to mimic the behavior of a
name server by making non-recursive queries and expecting
to receive answers to those queries that can be
referrals to other name servers.
</p></dd>
<dt><span class="term">-R <em class="replaceable"><code>number</code></em></span></dt>
<dd><p>
Number of retries for UDP queries:
If <em class="parameter"><code>number</code></em> is negative or zero, the
number of retries will default to 1. The default value is
1, or the value of the <em class="parameter"><code>attempts</code></em>
option in <code class="filename">/etc/resolv.conf</code>, if set.
</p></dd>
<dt><span class="term">-s</span></dt>
<dd><p>
Do <span class="emphasis"><em>not</em></span> send the query to the next
nameserver if any server responds with a SERVFAIL
response, which is the reverse of normal stub resolver
behavior.
</p></dd>
<dt><span class="term">-t <em class="replaceable"><code>type</code></em></span></dt>
<dd>
<p>
The <code class="option">-4</code> option forces <span class="command"><strong>host</strong></span> to only
use IPv4 query transport. The <code class="option">-6</code> option forces
<span class="command"><strong>host</strong></span> to only use IPv6 query transport.
</p>
Query type:
the <em class="parameter"><code>type</code></em> argument can be any
recognized query type: CNAME, NS, SOA, TXT, DNSKEY, AXFR, etc.
</p>
<p>
The <code class="option">-t</code> option is used to select the query type.
<em class="parameter"><code>type</code></em> can be any recognized query
type: CNAME,
NS, SOA, SIG, KEY, AXFR, etc. When no query type is specified,
<span class="command"><strong>host</strong></span> automatically selects an appropriate
query
type. By default, it looks for A, AAAA, and MX records, but if the
<code class="option">-C</code> option was given, queries will be made for SOA
records, and if <em class="parameter"><code>name</code></em> is a
dotted-decimal IPv4
address or colon-delimited IPv6 address, <span class="command"><strong>host</strong></span> will
query for PTR records. If a query type of IXFR is chosen the starting
serial number can be specified by appending an equal followed by the
starting serial number (e.g. -t IXFR=12345678).
</p>
When no query type is specified, <span class="command"><strong>host</strong></span>
automatically selects an appropriate query type. By default, it
looks for A, AAAA, and MX records.
If the <code class="option">-C</code> option is given, queries will
be made for SOA records.
If <em class="parameter"><code>name</code></em> is a dotted-decimal IPv4
address or colon-delimited IPv6
address, <span class="command"><strong>host</strong></span> will query for PTR
records.
</p>
<p>
The time to wait for a reply can be controlled through the
<code class="option">-W</code> and <code class="option">-w</code> options. The
<code class="option">-W</code> option makes <span class="command"><strong>host</strong></span>
wait for
<em class="parameter"><code>wait</code></em> seconds. If <em class="parameter"><code>wait</code></em>
is less than one, the wait interval is set to one second. When the
<code class="option">-w</code> option is used, <span class="command"><strong>host</strong></span>
will
effectively wait forever for a reply. The time to wait for a response
will be set to the number of seconds given by the hardware's maximum
value for an integer quantity. By default, <span class="command"><strong>host</strong></span>
will wait for 5 seconds for UDP responses and 10 seconds for TCP
connections. These defaults can be overridden by the
<em class="parameter"><code>timeout</code></em> option in
<code class="filename">/etc/resolv.conf</code>.
</p>
If a query type of IXFR is chosen the starting serial
number can be specified by appending an equal followed by
the starting serial number
(e.g. <code class="option">-t</code> <code class="literal">IXFR=12345678</code>).
</p>
</dd>
<dt><span class="term">-T</span></dt>
<dd><p>
TCP:
By default, <span class="command"><strong>host</strong></span> uses UDP when making
queries. The <code class="option">-T</code> option makes it use a TCP
connection when querying the name server. TCP will be
automatically selected for queries that require it, such
as zone transfer (AXFR) requests.
</p></dd>
<dt><span class="term">-m <em class="replaceable"><code>flag</code></em></span></dt>
<dd><p>
Memory usage debugging: the flag can
be <em class="parameter"><code>record</code></em>, <em class="parameter"><code>usage</code></em>,
or <em class="parameter"><code>trace</code></em>. You can specify
the <code class="option">-m</code> option more than once to set
multiple flags.
</p></dd>
<dt><span class="term">-v</span></dt>
<dd><p>
Verbose output.
Equivalent to the <code class="option">-d</code> debug option.
Verbose output can also be enabled by setting
the <em class="parameter"><code>debug</code></em> option
in<code class="filename">/etc/resolv.conf</code>.
</p></dd>
<dt><span class="term">-V</span></dt>
<dd><p>
Print the version number and exit.
</p></dd>
<dt><span class="term">-w</span></dt>
<dd><p>
Wait forever: the query timeout is set to the maximum possible.
See also the <code class="option">-W</code> option.
</p></dd>
<dt><span class="term">-W <em class="replaceable"><code>wait</code></em></span></dt>
<dd>
<p>
The <code class="option">-s</code> option tells <span class="command"><strong>host</strong></span>
<span class="emphasis"><em>not</em></span> to send the query to the next nameserver
if any server responds with a SERVFAIL response, which is the
reverse of normal stub resolver behavior.
</p>
Timeout: wait for up to <em class="parameter"><code>wait</code></em>
seconds for a reply. If <em class="parameter"><code>wait</code></em> is
less than one, the wait interval is set to one second.
</p>
<p>
The <code class="option">-m</code> can be used to set the memory usage debugging
flags
<em class="parameter"><code>record</code></em>, <em class="parameter"><code>usage</code></em> and
<em class="parameter"><code>trace</code></em>.
</p>
By default, <span class="command"><strong>host</strong></span> will wait for 5
seconds for UDP responses and 10 seconds for TCP
connections. These defaults can be overridden by
the <em class="parameter"><code>timeout</code></em> option
in <code class="filename">/etc/resolv.conf</code>.
</p>
<p>
The <code class="option">-V</code> option causes <span class="command"><strong>host</strong></span>
to print the version number and exit.
</p>
See also the <code class="option">-w</code> option.
</p>
</dd>
</dl></div>
</div>
<div class="refsection">
<a name="id-1.8"></a><h2>IDN SUPPORT</h2>
<a name="id-1.9"></a><h2>IDN SUPPORT</h2>
<p>
If <span class="command"><strong>host</strong></span> has been built with IDN (internationalized
domain name) support, it can accept and display non-ASCII domain names.
......@@ -209,12 +245,12 @@
</p>
</div>
<div class="refsection">
<a name="id-1.9"></a><h2>FILES</h2>
<a name="id-1.10"></a><h2>FILES</h2>
<p><code class="filename">/etc/resolv.conf</code>
</p>
</div>
<div class="refsection">
<a name="id-1.10"></a><h2>SEE ALSO</h2>
<a name="id-1.11"></a><h2>SEE ALSO</h2>
<p><span class="citerefentry"><span class="refentrytitle">dig</span>(1)</span>,
<span class="citerefentry"><span class="refentrytitle">named</span>(8)</span>.
</p>
......