DragonFly On-Line Manual Pages

Search: Section:  

khost(1)                    Knot DNS, version 1.6.6                   khost(1)


NAME

       khost - Simple DNS lookup utility (libknot equivalent of ISC host)


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.

       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 short help.


OPTIONS

       -4  Use IPv4 protocol only.

       -6  Use IPv6 protocol only.

       -a  Send ANY query with verbose mode.

       -d  Enable debug messages if any.

       -h, --help
           Print help.

       -r  Disable recursion.

       -s  Stop querying next nameserver if SERVFAIL response is received.

       -T  Use TCP protocol.

       -v  Enable verbose output.

       -V, --version
           Print program version.

       -w  Wait forever for the reply.

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

       -t type
           Set 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.


NOTES

   Missing features with regard to ISC host
       Options -C, -i, -l, -m, -N.

   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).


EXAMPLES

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

       # khost example.com

       Example 2. Get reverse record for address 192.0.2.1:

       # khost 192.0.2.1

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

       # khost -t AXFR -v example.com


FILES

       /etc/resolv.conf


AUTHOR

       Daniel Salzman (www.knot-dns.cz)

       Please send any bug reports or comments to knot-dns@labs.nic.cz


SEE ALSO

       kdig(1), knsupdate(1).

CZ.NIC Labs                       2015-11-24                          khost(1)

Search: Section: