Gecko [ nbspublicschool.com ]

Name	Size	Permission
sample	[ DIR ]	drwxr-xr-x
Bv9ARM.ch01.html	26.11 KB	-rw-r--r--
Bv9ARM.ch02.html	7.18 KB	-rw-r--r--
Bv9ARM.ch03.html	30.38 KB	-rw-r--r--
Bv9ARM.ch04.html	129.65 KB	-rw-r--r--
Bv9ARM.ch05.html	6.29 KB	-rw-r--r--
Bv9ARM.ch06.html	684.15 KB	-rw-r--r--
Bv9ARM.ch07.html	19.56 KB	-rw-r--r--
Bv9ARM.ch08.html	6.32 KB	-rw-r--r--
Bv9ARM.ch09.html	10.27 KB	-rw-r--r--
Bv9ARM.ch10.html	6.92 KB	-rw-r--r--
Bv9ARM.ch11.html	53.24 KB	-rw-r--r--
Bv9ARM.ch12.html	20.45 KB	-rw-r--r--
Bv9ARM.ch13.html	9.88 KB	-rw-r--r--
Bv9ARM.html	29.71 KB	-rw-r--r--
Bv9ARM.pdf	1.24 MB	-rw-r--r--
CHANGES	528.76 KB	-rw-r--r--
README	22.46 KB	-rw-r--r--
isc-logo.pdf	281.24 KB	-rw-r--r--
man.arpaname.html	3.01 KB	-rw-r--r--
man.ddns-confgen.html	9.49 KB	-rw-r--r--
man.delv.html	23.87 KB	-rw-r--r--
man.dig.html	40.63 KB	-rw-r--r--
man.dnssec-checkds.html	5.35 KB	-rw-r--r--
man.dnssec-coverage.html	11.35 KB	-rw-r--r--
man.dnssec-dsfromkey.html	9.68 KB	-rw-r--r--
man.dnssec-importkey.html	9.58 KB	-rw-r--r--
man.dnssec-keyfromlabel.html	19.12 KB	-rw-r--r--
man.dnssec-keygen.html	22.31 KB	-rw-r--r--
man.dnssec-keymgr.html	15.15 KB	-rw-r--r--
man.dnssec-revoke.html	5.62 KB	-rw-r--r--
man.dnssec-settime.html	14.55 KB	-rw-r--r--
man.dnssec-signzone.html	30.69 KB	-rw-r--r--
man.dnssec-verify.html	7.43 KB	-rw-r--r--
man.dnstap-read.html	4.39 KB	-rw-r--r--
man.genrandom.html	4.13 KB	-rw-r--r--
man.host.html	12.74 KB	-rw-r--r--
man.isc-hmac-fixup.html	4.6 KB	-rw-r--r--
man.lwresd.html	12.45 KB	-rw-r--r--
man.mdig.html	23.18 KB	-rw-r--r--
man.named-checkconf.html	6.77 KB	-rw-r--r--
man.named-checkzone.html	20.21 KB	-rw-r--r--
man.named-journalprint.html	4.2 KB	-rw-r--r--
man.named-nzd2nzf.html	3.86 KB	-rw-r--r--
man.named-rrchecker.html	4.21 KB	-rw-r--r--
man.named.conf.html	73.42 KB	-rw-r--r--
man.named.html	19.07 KB	-rw-r--r--
man.nsec3hash.html	4.17 KB	-rw-r--r--
man.nslookup.html	14.49 KB	-rw-r--r--
man.nsupdate.html	28.11 KB	-rw-r--r--
man.pkcs11-destroy.html	5.57 KB	-rw-r--r--
man.pkcs11-keygen.html	7.13 KB	-rw-r--r--
man.pkcs11-list.html	5.46 KB	-rw-r--r--
man.pkcs11-tokens.html	3.73 KB	-rw-r--r--
man.rndc-confgen.html	11.48 KB	-rw-r--r--
man.rndc.conf.html	10.17 KB	-rw-r--r--
man.rndc.html	39.89 KB	-rw-r--r--
named.conf.default	1.76 KB	-rw-r--r--
notes.html	7.31 KB	-rw-r--r--
notes.pdf	50.96 KB	-rw-r--r--

Code Editor : man.host.html

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">

<html lang="en">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
<title>host</title>
<meta name="generator" content="DocBook XSL Stylesheets V1.78.1">
<link rel="home" href="Bv9ARM.html" title="BIND 9 Administrator Reference Manual">
<link rel="up" href="Bv9ARM.ch13.html" title="Manual pages">
<link rel="prev" href="man.mdig.html" title="mdig">
<link rel="next" href="man.delv.html" title="delv">
</head>
<body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF">
<div class="navheader">
<table width="100%" summary="Navigation header">
<tr><th colspan="3" align="center">host</th></tr>
<tr>
<td width="20%" align="left">
<a accesskey="p" href="man.mdig.html">Prev</a>�</td>
<th width="60%" align="center">Manual pages</th>
<td width="20%" align="right">�<a accesskey="n" href="man.delv.html">Next</a>
</td>
</tr>
</table>
<hr>
</div>
<div class="refentry">
<a name="man.host"></a><div class="titlepage"></div>

<div class="refnamediv">
<h2>Name</h2>

 host
 &#8212; DNS lookup utility
 
</div>

<div class="refsynopsisdiv">
<h2>Synopsis</h2>
 <div class="cmdsynopsis">
 <code class="command">host</code> 
 [<code class="option">-aCdlnrsTUwv</code>]
 [<code class="option">-c <code>class</code></code>]
 [<code class="option">-N <code>ndots</code></code>]
 [<code class="option">-R <code>number</code></code>]
 [<code class="option">-t <code>type</code></code>]
 [<code class="option">-W <code>wait</code></code>]
 [<code class="option">-m <code>flag</code></code>]
 [
	[<code class="option">-4</code>]
	 | [<code class="option">-6</code>]
 ]
 [<code class="option">-v</code>]
 [<code class="option">-V</code>]
 {name}
 [server]
 </div>
 </div>

<div class="refsection">
<a name="id-1.14.4.7"></a><h2>DESCRIPTION</h2>

host
 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,
 host
 prints a short summary of its command line arguments and options.

<code>name</code> 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 host will by
 default
 perform a reverse lookup for that address.
 <code>server</code> is an optional argument which
 is either
 the name or IP address of the name server that host
 should query instead of the server or servers listed in
 <code class="filename">/etc/resolv.conf</code>.

</div>

<div class="refsection">
<a name="id-1.14.4.8"></a><h2>OPTIONS</h2>

<div class="variablelist"><dl class="variablelist">
<dt>-4</dt>
<dd>
	 
	 Use IPv4 only for query transport.
	 See also the <code class="option">-6</code> option.
	 
	</dd>
<dt>-6</dt>
<dd>
	 
	 Use IPv6 only for query transport.
	 See also the <code class="option">-4</code> option.
	 
	</dd>
<dt>-a</dt>
<dd>
	 
	 "All". The <code class="option">-a</code> option is normally equivalent
	 to <code class="option">-v -t <code class="literal">ANY</code></code>.
	 It also affects the behaviour of the <code class="option">-l</code>
	 list zone option.
	 
	</dd>
<dt>-c <code>class</code></dt>
<dd>
	 
	 Query class: This can be used to lookup HS (Hesiod) or CH
	 (Chaosnet) class resource records. The default class is IN
	 (Internet).
	 
	</dd>
<dt>-C</dt>
<dd>
	 
	 Check consistency: host will query the
	 SOA records for zone <code>name</code> 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.
	 
	</dd>
<dt>-d</dt>
<dd>
	 
	 Print debugging traces.
	 Equivalent to the <code class="option">-v</code> verbose option.
	 
	</dd>
<dt>-i</dt>
<dd>
	 
	 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.
	 
	</dd>
<dt>-l</dt>
<dd>
	 
	 List zone:
	 The host command performs a zone transfer of
	 zone <code>name</code> and prints out the NS,
	 PTR and address records (A/AAAA).
	 
	 
	 Together, the <code class="option">-l -a</code>
	 options print all records in the zone.
	 
	</dd>
<dt>-N <code>ndots</code></dt>
<dd>
	 
	 The number of dots that have to be
	 in <code>name</code> 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 search or domain directive
	 in <code class="filename">/etc/resolv.conf</code>.
	 
	</dd>
<dt>-r</dt>
<dd>
	 
	 Non-recursive query:
	 Setting this option clears the RD (recursion desired) bit
	 in the query. This should mean that the name server
	 receiving the query will not attempt to
	 resolve <code>name</code>.
	 The <code class="option">-r</code> option
	 enables host 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.
	 
	</dd>
<dt>-R <code>number</code></dt>
<dd>
	 
	 Number of retries for UDP queries:
	 If <code>number</code> is negative or zero, the
	 number of retries will default to 1. The default value is
	 1, or the value of the <code>attempts</code>
	 option in <code class="filename">/etc/resolv.conf</code>, if set.
	 
	</dd>
<dt>-s</dt>
<dd>
	 
	 Do not send the query to the next
	 nameserver if any server responds with a SERVFAIL
	 response, which is the reverse of normal stub resolver
	 behavior.
	 
	</dd>
<dt>-t <code>type</code></dt>
<dd>
	 
	 Query type:
	 The <code>type</code> argument can be any
	 recognized query type: CNAME, NS, SOA, TXT, DNSKEY, AXFR, etc.
	 
	 
	 When no query type is specified, host
	 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 <code>name</code> is a dotted-decimal IPv4
	 address or colon-delimited IPv6
	 address, host 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
	 (like <code class="option">-t <code class="literal">IXFR=12345678</code></code>).
	 
	</dd>
<dt>
-T, -U
</dt>
<dd>
	 
	 TCP/UDP:
	 By default, host 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. Type ANY queries default
	 to TCP but can be forced to UDP initially using <code class="option">-U</code>.
	 
	</dd>
<dt>-m <code>flag</code></dt>
<dd>
	 
	 Memory usage debugging: the flag can
	 be <code>record</code>, <code>usage</code>,
	 or <code>trace</code>. You can specify
	 the <code class="option">-m</code> option more than once to set
	 multiple flags.
	 
	</dd>
<dt>-v</dt>
<dd>
	 
	 Verbose output.
	 Equivalent to the <code class="option">-d</code> debug option.
	 Verbose output can also be enabled by setting
	 the <code>debug</code> option
	 in <code class="filename">/etc/resolv.conf</code>.
	 
	</dd>
<dt>-V</dt>
<dd>
	 
	 Print the version number and exit.
	 
	</dd>
<dt>-w</dt>
<dd>
	 
	 Wait forever: The query timeout is set to the maximum possible.
	 See also the <code class="option">-W</code> option.
	 
	</dd>
<dt>-W <code>wait</code></dt>
<dd>
	 
	 Timeout: Wait for up to <code>wait</code>
	 seconds for a reply. If <code>wait</code> is
	 less than one, the wait interval is set to one second.
	 
	 
	 By default, host will wait for 5
	 seconds for UDP responses and 10 seconds for TCP
	 connections. These defaults can be overridden by
	 the <code>timeout</code> option
	 in <code class="filename">/etc/resolv.conf</code>.
	 
	 
	 See also the <code class="option">-w</code> option.
	 
	</dd>
</dl></div>

</div>

<div class="refsection">
<a name="id-1.14.4.9"></a><h2>IDN SUPPORT</h2>

If host has been built with IDN (internationalized
 domain name) support, it can accept and display non-ASCII domain names.
 host appropriately converts character encoding of
 domain name before sending a request to DNS server or displaying a
 reply from the server.
 If you'd like to turn off the IDN support for some reason, defines
 the <code class="envar">IDN_DISABLE</code> environment variable.
 The IDN support is disabled if the variable is set when
 host runs.
 
 </div>

<div class="refsection">
<a name="id-1.14.4.10"></a><h2>FILES</h2>

<code class="filename">/etc/resolv.conf</code>
 
 </div>

dig(1)
 ,
 
 named(8)
 .
 
 </div>

</div>
<div class="navfooter">
<hr>
<table width="100%" summary="Navigation footer">
<tr>
<td width="40%" align="left">
<a accesskey="p" href="man.mdig.html">Prev</a>�</td>
<td width="20%" align="center"><a accesskey="u" href="Bv9ARM.ch13.html">Up</a></td>
<td width="40%" align="right">�<a accesskey="n" href="man.delv.html">Next</a>
</td>
</tr>
<tr>
<td width="40%" align="left" valign="top">
mdig�</td>
<td width="20%" align="center"><a accesskey="h" href="Bv9ARM.html">Home</a></td>
<td width="40%" align="right" valign="top">�delv</td>
</tr>
</table>
</div>
BIND 9.11.4-P2 (Extended Support Version)
</body>
</html>

${this.title}

Code Editor : man.host.html