host command in Linux with examples

host command in Linux system is used for DNS (Domain Name System) lookup operations. In simple words, this command is used to find the IP address of a particular domain name or if you want to find out the domain name of a particular IP address the host command becomes handy. You can also find more specific details of a domain by specifying the corresponding option along with the domain name.

Syntax:

host [-aCdlriTWV] [-c class] [-N ndots] [-t type] [-W time]
     [-R number] [-m flag] hostname [server]

host command without any option: It will print the general syntax of the command along with the various options that can be used with the host command as well as gives a brief description about each option.

Example:



Different options with the host command:

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