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= RESOLVER(1)
:doctype: manpage
:man source: resolver
:man version: 2018.08.26
:man manual: resolver
== NAME
resolver - a tool to query DNS record, specifically build for *rescached*(1)
and developer.
== SYNOPSIS
+resolver+ [-ns nameserver] [-t type] [-c class] hostname
== DESCRIPTION
+resolver+ is a tool to resolve hostname to address, or to query services
on hostname by type (MX, SOA, TXT, etc.).
It will return and print the DNS response.
== OPTIONS
[[nameserver]]
=== +nameserver+
Value:: Internet address
Format:: xxx.xxx.xxx.xxx[:port]
Default:: One of +nameserver+ in +/etc/resolv.conf+
Description:: This option define the DNS server where the resolver will
send the query.
[[type]]
=== +type+
Value:: DNS record type
Format:: String
Default:: A
Description:: List of supported DNS record type,
+
----
TYPE (ID) - Description
* A (1) - a host Address
* NS (2) - an authoritative Name Server
* CNAME (5) - the Canonical NAME for an alias
* SOA (6) - marks the Start of a zone of Authority
* MB (7) - a MailBox domain name
* MG (8) - a Mail Group member
* MR (9) - a Mail Rename domain name
* NULL (10) - a null resource record
* WKS (11) - a Well Known Service description
* PTR (12) - a domain name PoinTeR
* HINFO (13) - Host INFOrmation
* MINFO (14) - mailbox or mail list information
* MX (15) - Mail Exchange
* TXT (16) - TeXT strings
* AAAA (28) - a host address in IPv6
* SRV (33) - a SerViCe record
----
[[hostname]]
=== +hostname+
Value:: Internet hostname
Format:: [subdomain].[domain][.TLD]
Default:: -
Description:: Hostname that will be queried to name server.
== EXIT STATUS
Upon exit and success +resolver+ will return 0, or 1 otherwise.
== EXAMPLE
Resolve the IPv4 address for kilabit.info using one of nameserver in
`/etc/resolv.conf`,
$ resolver kilabit.info
Resolve the IPv4 address for kilabit.info using 127.0.0.1 at port 54 as
name server,
$ resolver -ns 127.0.0.1:54 kilabit.info
Resolve the mail exchange (MX) for kilabit.info,
$ resolver -t MX kilabit.info
== AUTHOR
This software is developed by M. Shulhan (ms@kilabit.info).
== LICENSE
Copyright 2018, M. Shulhan (ms@kilabit.info).
All rights reserved.
Use of this source code is governed by a BSD-style license that can be found
in the LICENSE file.
== LINKS
Source code repository: https://github.com/shuLhan/rescached-go
== SEE ALSO
*rescached*(1), *rescached.cfg*(5)
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