Man page - khost(1)

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Package: knot-host
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khost(1)

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Manual

KHOST

NAME
SYNOPSIS
DESCRIPTION
Parameters
Options
EXIT VALUES
EXAMPLES
FILES
SEE ALSO
AUTHOR
COPYRIGHT

NAME

khost - Simple DNS lookup utility

SYNOPSIS

khost [ options ] name [ server ]

DESCRIPTION

This utility sends a DNS query for the name to the server and prints a reply in more user-readable form. For more advanced DNS queries use kdig instead.

Parameters

	name		Is a domain name that is to be looked up. If the name is IPv4 or IPv6 address the PTR query type is used.
	server		Is a name or an address of the nameserver to send a query to. The address can be specified using [address]:port notation. If no server is specified, the servers from /etc/resolv.conf are used.

If no arguments are provided, khost prints a short help.

Options

	-4		Use the IPv4 protocol only.
	-6		Use the IPv6 protocol only.
	-a		Send ANY query with verbose mode.
	-d		Enable debug messages.

-h , --help

Print the program help.

	-r		Disable recursion.
	-T		Use the TCP protocol.
	-v		Enable verbose output.

-V , --version

Print the program version. The option -VV makes the program print the compile time configuration summary.

-w

Wait forever for the reply.

-c class

Set the query class (e.g. CH, CLASS4). The default class is IN.

-t type

Set the query type (e.g. NS, IXFR=12345, TYPE65535). The default is to send 3 queries (A, AAAA and MX).

-R retries

The number (>=0) of UDP retries to query a nameserver. The default is 1.

-W wait

The time to wait for a reply in seconds. This timeout applies to each query try. The default is 2 seconds.

EXIT VALUES

Exit status of 0 means successful operation. Any other exit status indicates an error.

EXAMPLES

Get the A, AAAA and MX records for example.com:

$ khost example.com

Get the reverse record for address 192.0.2.1:

$ khost 192.0.2.1

Perform a verbose zone transfer for zone example.com:

$ khost -t AXFR -v example.com

FILES

/etc/resolv.conf

AUTHOR

CZ.NIC, z.s.p.o. and contributors <https://www.knot-dns.cz/>