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Note that hostnames within a CDN will not resolve to the canonical domain name e. Also note that DNS hosts can have more than one name. This is common for hosts with more than one webserver virtual hostingalthough this is becoming less common thanks to the proliferation of virtualization technologies. If you're not getting the hostname you expect, be sure you check this file. The IP address can be displayed with: nmcli -p device show You should see the IP address in the output. What about ifconfig?

Actually, you can still use ifconfig command. It is present in net-tools package.

You can install it using the package manager of your system. However, use of net-tools is not encouraged so I suggest sticking with the ip command.

If a parameter is given or link name then root the superuser can also set a new NIS domain. It is usually the hostname followed by the DNS domain name the part after the first dot. You can check the FQDN using hostname --fqdn or the domain name using dnsdomainname. You cannot change the FQDN with hostname or dnsdomainname.

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The DNS domain name is the part after the first dot. Therefore avoid using hostname --fqdn, how to know hostname from ip address in unix --domain and dnsdomainname. Nowadays most software can cope with a full FQDN here. This file is read at boot time by the system initialization scripts to set the hostname.

How to know hostname from ip address in unix - agree with

Add a comment 32 The solutions given so far mostly work in the simpler case: the hostname directly resolves to a single IPv4 address.

This might be the only case where you need to resolve hostnames, but if not, below is a discussion on some cases that you might need to handle. Chris Down and Heinzi briefly discussed the case where the hostname resolves to more than one IP addresses. In this case and others belowbasic scripting under the assumption that a hostname directly resolves to a single IP address may break. This is where the alias case needs to be introduced. For more information on aliases, check here.

Definition of IP address and why all computers and devices need one

More than multiple IP addresses and aliases, is there some other special cases In this case, the resolution succeeds, but a ping fails with an unknown host error message. This might be a case where your scripting fails. At these levels, actual address utilization ratios will be small on any IPv6 network segment.

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