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Path: utzoo!utcsrgv!garfield!dreacad!dalcs!dartvax!decvax!decwrl!amd!fortune!hpda!hplabs!hao!seismo!rlgvax!guy
From: guy@rlgvax.UUCP
Newsgroups: net.bugs.uucp
Subject: Re: Re: How to change nodenames
Message-ID: <103@rlgvax.UUCP>
Date: Fri, 14-Sep-84 01:56:22 EDT
Article-I.D.: rlgvax.103
Posted: Fri Sep 14 01:56:22 1984
Date-Received: Sat, 15-Sep-84 07:14:30 EDT
References: <750@enea.UUCP> <801@dual.UUCP>
Organization: CCI Office Systems Group, Reston, VA
Lines: 34

> >> Vendors shouldn't send out systems with default names if there isnt't
> >> any way to change it locally. Does anyone know how nodenames are
> >> changed in different brands of Unix?
> 
> The rules are as follows:
> 
> 	Vanilla v7 UNIX:	Change the name in uucp.h, whoami.h, and mail.c
> 				and recompile UUCP and /bin/mail.
> 
> 	2.8 BSD:		Same as above...
> 
> 	System III:		Execute /etc/chgnod and reboot the system...
> 	
> 	System V:		Same as above
> 
> 	UniPlus System III/V:	Same as above
> 

The rules for v7, 2.8, etc. only apply, of course, if you have the source to
/bin/mail or UUCP (or if you've got the source from somewhere and are willing
to install that version).  Vanilla System III and System V don't have
/etc/chgnod; they compile the system name into the kernel (which, of course,
assumes you have source, grumble grumble).  I suspect "chgnod" is a UniPlusism;
on our System III (called PERPOS-S 1.10 or 1.11 for reasons you really don't
want to know about) it's done by doing "uname <newhostname>" which sets it
in /perpos (I *said* you didn't want to know...) and in /dev/kmem, so you
don't have to reboot.

Methinks AT&T should get on the stick and put in such a facility as a standard
part of System V, as not all vendors are intelligent enough to realize that
it's necessary.

	Guy Harris
	{seismo,ihnp4,allegra}!rlgvax!guy