Provided by: knot-host_2.1.1-1build1_amd64 bug


       khost - Simple DNS lookup utility


       khost [options] name [server]


       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.

       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.

       -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.


       Missing features with regard to ISC dig:
          Options -C, -i, -l, -m, -N and -s.

       Differences with regard to ISC host:
          Option -d is not equivalent to -v, but enables debug messages.

          The number of retries can be set to zero.

          Verbose mode has slightly different format (same as kdig).


       1. Get the A, AAAA and MX records for

             $ khost

       2. Get the reverse record for address

             $ khost

       3. Perform a verbose zone transfer for zone

             $ khost -t AXFR -v




       kdig(1), knsupdate(1).


       CZ.NIC Labs <>


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