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.

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 <http://www.knot-dns.cz>

COPYRIGHT

   Copyright 2010–2016, CZ.NIC, z.s.p.o.

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