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Domain name questions

My hosts file is like this :-

Code:

127.0.0.1  localdomain  localhost

192.168.0.2  david.domain.com davidpc.david

But if I try to check my domain name I get

Code:

domainname

(none)

[root@davidpc david]#

Any ideas?

domainname returns your NIS (YP) domain name, not your DNS domain name.

Thanks for that.
When I try dnsdomainname I get an error

Code:

dnsdomainname

dnsdomainname: Unknown host

Any ideas why?

Quote:

My hosts file is like this :-

Code:

127.0.0.1    localdomain      localhost

192.168.0.2  david.domain.com davidpc.david

I don't have any use for dnsdomainname but your hosts file is wrong / not formatted correctly

It should read like this:

Code:

#IP NUMBER    FQDN                Shortname



127.0.0.1      localhost

192.168.0.2    david.domain.com    david

You can change domain.com to anything you like, but I prefer hostname.home.net or hostname.home.lan - it does not really matter so long as you are consistent with your naming. It is your LAN, so, as long as you are using private LAN IP address allocations (192.168.x.y etc.), you can do as you wish as these addresses are not routed through to the internet.