Path: utzoo!utgpu!jarvis.csri.toronto.edu!rutgers!cs.utexas.edu!uunet!intercon!amanda@intercon.uu.net
From: amanda@intercon.uu.net (Amanda Walker)
Newsgroups: news.software.b
Subject: Re: Cnews active min field AND nn database expire
Message-ID: <1154@intercon.UUCP>
Date: 5 Jul 89 17:39:58 GMT
References: <352@texas.dk> <1989Jun25.174800.13276@utzoo.uucp> <10931@ibmpcug.UUCP> <1989Jun20.213129.8095@utzoo.uucp> <10947@ibmpcug.UUCP> <1989Jun28.172724.15420@vicom.com>
Sender: news@intercon.UUCP
Reply-To: amanda@intercon.uu.net (Amanda Walker)
Organization: InterCon Systems Corporation
Lines: 21

In article <352@texas.dk>, storm@texas.dk (Kim F. Storm) writes:
> But before I can utilize this in nn, NNTP must be expanded to provice
> the following information:
> 
>  - Modification time on each news directory (to know whether it has changed)
>  - A list of all article numbers in the group (basically an ls on the
>    directory with all non-numeric entries eliminated).
> 

#1 could be tricky, but you can fake #2 with

	XHDR Message-ID n-m

where m is the lowest article and n is the high number from the active file.
n can be gotten either from the active file in news B, from your own database
if you're willing to keep track, or if all else fails, '0'.  This will
give you message-id's as well, of course, but that can come in handy too.

--
Amanda Walker  <amanda@intercon.uu.net>
InterCon Systems Corporation