On 27 Oct 2023 11:45 -0500, from j...@sugarbit.com (John Hasler): >> Here are the first lines of 'man domainname" : > > That doesn't help very much with no hint as to what NIS is and that it > isn't relevant to DNS.
The part of the beginning of that man page which Erwan didn't quote does seem a bit more helpful, though. Quoting the entire NAME section: > HOSTNAME(1) Linux Programmer's Manual HOSTNAME(1) > > NAME > hostname - show or set the system's host name > domainname - show or set the system's NIS/YP domain name > ypdomainname - show or set the system's NIS/YP domain name > nisdomainname - show or set the system's NIS/YP domain name > dnsdomainname - show the system's DNS domain name Even for someone who doesn't know what "NIS/YP" is, that should be a strong suggestion already that it is _not_ the same thing as "DNS". (And let's not get into the issue of the term "domain" in terms like _classless inter-domain routing_.) -- Michael Kjörling 🔗 https://michael.kjorling.se “Remember when, on the Internet, nobody cared that you were a dog?”