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. | ||
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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. |
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-6 |
Use the IPv6 protocol only. |
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|
-a |
Send ANY query with verbose mode. |
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-d |
Enable debug messages. |
-h, --help
Print the program help.
|
-r |
Disable recursion. |
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-T |
Use the TCP protocol. |
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-v |
Enable verbose output. |
-V, --version
Print the program version.
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-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
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2. |
Get the reverse record for address 192.0.2.1: |
$ khost 192.0.2.1
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3. |
Perform a verbose zone transfer for zone example.com: |
$ khost -t AXFR -v example.com
FILES
/etc/resolv.conf
SEE ALSO
AUTHOR
CZ.NIC Labs <https://www.knot-dns.cz>;
COPYRIGHT
Copyright 2010–2024, CZ.NIC, z.s.p.o.