.. highlight:: none ``khost`` – Simple DNS lookup utility ===================================== Synopsis -------- :program:`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 :doc:`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 :file:`/etc/resolv.conf` are used. If no arguments are provided, :program:`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 ----- :file:`/etc/resolv.conf` See Also -------- :manpage:`kdig(1)`, :manpage:`knsupdate(1)`.