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diff --git a/contrib/bind9/bin/dig/host.docbook b/contrib/bind9/bin/dig/host.docbook new file mode 100644 index 000000000000..561f7c4397d2 --- /dev/null +++ b/contrib/bind9/bin/dig/host.docbook @@ -0,0 +1,212 @@ +<!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook V4.1//EN"> +<!-- + - Copyright (C) 2004 Internet Systems Consortium, Inc. ("ISC") + - Copyright (C) 2000-2002 Internet Software Consortium. + - + - Permission to use, copy, modify, and distribute this software for any + - purpose with or without fee is hereby granted, provided that the above + - copyright notice and this permission notice appear in all copies. + - + - THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH + - REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY + - AND FITNESS. IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT, + - INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM + - LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE + - OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR + - PERFORMANCE OF THIS SOFTWARE. +--> + +<!-- $Id: host.docbook,v 1.2.2.2.4.5 2004/04/13 01:26:26 marka Exp $ --> + +<refentry> + +<refentryinfo> +<date>Jun 30, 2000</date> +</refentryinfo> + +<refmeta> +<refentrytitle>host</refentrytitle> +<manvolnum>1</manvolnum> +<refmiscinfo>BIND9</refmiscinfo> +</refmeta> + +<refnamediv> +<refname>host</refname> +<refpurpose>DNS lookup utility</refpurpose> +</refnamediv> + +<refsynopsisdiv> +<cmdsynopsis> + <command>host</command> + <arg><option>-aCdlnrTwv</option></arg> + <arg><option>-c <replaceable class="parameter">class</replaceable></option></arg> + <arg><option>-N <replaceable class="parameter">ndots</replaceable></option></arg> + <arg><option>-R <replaceable class="parameter">number</replaceable></option></arg> + <arg><option>-t <replaceable class="parameter">type</replaceable></option></arg> + <arg><option>-W <replaceable class="parameter">wait</replaceable></option></arg> + <arg><option>-4</option></arg> + <arg><option>-6</option></arg> + <arg choice=req>name</arg> + <arg choice=opt>server</arg> +</cmdsynopsis> +</refsynopsisdiv> + +<refsect1> +<title>DESCRIPTION</title> +<para> +<command>host</command> +is a simple utility for performing DNS lookups. +It is normally used to convert names to IP addresses and vice versa. +When no arguments or options are given, +<command>host</command> +prints a short summary of its command line arguments and options. +</para> + +<para> +<parameter>name</parameter> is the domain name that is to be looked +up. It can also be a dotted-decimal IPv4 address or a colon-delimited +IPv6 address, in which case <command>host</command> will by default +perform a reverse lookup for that address. +<parameter>server</parameter> is an optional argument which is either +the name or IP address of the name server that <command>host</command> +should query instead of the server or servers listed in +<filename>/etc/resolv.conf</filename>. +</para> + +<para> +The <option>-a</option> (all) option is equivalent to setting the +<option>-v</option> option and asking <command>host</command> to make +a query of type ANY. +</para> + +<para> +When the <option>-C</option> option is used, <command>host</command> +will attempt to display the SOA records for zone +<parameter>name</parameter> 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. +</para> + +<para> +The <option>-c</option> option instructs to make a DNS query of class +<parameter>class</parameter>. This can be used to lookup Hesiod or +Chaosnet class resource records. The default class is IN (Internet). +</para> + +<para> +Verbose output is generated by <command>host</command> when the +<option>-d</option> or <option>-v</option> option is used. The two +options are equivalent. They have been provided for backwards +compatibility. In previous versions, the <option>-d</option> option +switched on debugging traces and <option>-v</option> enabled verbose +output. +</para> + +<para> +List mode is selected by the <option>-l</option> option. This makes +<command>host</command> perform a zone transfer for zone +<parameter>name</parameter>. Transfer the zone printing out the NS, PTR +and address records (A/AAAA). If combined with <option>-a</option> +all records will be printed. +</para> + +<para> +The <option>-i</option> +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. +</para> + +<para> +The <option>-N</option> option sets the number of dots that have to be +in <parameter>name</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 <type>search</type> +or <type>domain</type> directive in +<filename>/etc/resolv.conf</filename>. +</para> + +<para> +The number of UDP retries for a lookup can be changed with the +<option>-R</option> option. <parameter>number</parameter> indicates +how many times <command>host</command> will repeat a query that does +not get answered. The default number of retries is 1. If +<parameter>number</parameter> is negative or zero, the number of +retries will default to 1. +</para> + +<para> +Non-recursive queries can be made via the <option>-r</option> option. +Setting this option clears the <type>RD</type> — recursion +desired — bit in the query which <command>host</command> makes. +This should mean that the name server receiving the query will not +attempt to resolve <parameter>name</parameter>. The +<option>-r</option> option enables <command>host</command> to mimic +the behaviour 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. +</para> + +<para> +By default <command>host</command> uses UDP when making queries. The +<option>-T</option> 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. +</para> + +<para> +The <option>-4</option> option forces <command>host</command> to only +use IPv4 query transport. The <option>-6</option> option forces +<command>host</command> to only use IPv6 query transport. +</para> + +<para> +The <option>-t</option> option is used to select the query type. +<parameter>type</parameter> can be any recognised query type: CNAME, +NS, SOA, SIG, KEY, AXFR, etc. When no query type is specified, +<command>host</command> automatically selects an appropriate query +type. By default it looks for A records, but if the +<option>-C</option> option was given, queries will be made for SOA +records, and if <parameter>name</parameter> is a dotted-decimal IPv4 +address or colon-delimited IPv6 address, <command>host</command> 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). +</para> + +<para> +The time to wait for a reply can be controlled through the +<option>-W</option> and <option>-w</option> options. The +<option>-W</option> option makes <command>host</command> wait for +<parameter>wait</parameter> seconds. If <parameter>wait</parameter> +is less than one, the wait interval is set to one second. When the +<option>-w</option> option is used, <command>host</command> 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. +</para> + +</refsect1> + +<refsect1> +<title>FILES</title> +<para> +<filename>/etc/resolv.conf</filename> +</para> +</refsect1> + +<refsect1> +<title>SEE ALSO</title> +<para> +<citerefentry> +<refentrytitle>dig</refentrytitle><manvolnum>1</manvolnum> +</citerefentry>, +<citerefentry> +<refentrytitle>named</refentrytitle><manvolnum>8</manvolnum> +</citerefentry>. +</para> + +</refsect1> +</refentry> |