Hostname Fully Qualified Domain Name Linux. In the left menu select Configuration. It is also part of the Fully Qualified Domain Name FQDN which is required for many applications.
An FQDN is an acronym for a fully qualified domain name. So hostname is related to DNS Domain Name System or NIS Network Information System. In the networking terminology the domain name is the mapping of IP with the name.
Your computer name with Fully Qualified Domain Name FQDN.
From its manual page hostname is used to display the systems DNS name and to display or set its hostname or NIS domain name. This article assumes that you have already created a VM. It is part of DNS Domain name System. Domainname command in Linux is used to return the Network Information System NIS domain name of the host.