KHOST(1)                           Knot DNS                           KHOST(1)

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.

       -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

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

             $ khost example.com

       2. Get the reverse record for address 192.0.2.1:

             $ khost 192.0.2.1

       3. Perform a verbose zone transfer for zone example.com:

             $ khost -t AXFR -v example.com

FILES
       /etc/resolv.conf

SEE ALSO
       kdig(1), knsupdate(1).

AUTHOR
       CZ.NIC Labs <https://www.knot-dns.cz>

COPYRIGHT
       Copyright 2010-2024, CZ.NIC, z.s.p.o.

3.3.5                             2024-03-06                          KHOST(1)