Path: utzoo!mnetor!uunet!husc6!cmcl2!beta!mbr
From: mbr@beta.UUCP (Mike Rose)
Newsgroups: comp.os.vms
Subject: Re: Testing for a node
Message-ID: <17216@beta.UUCP>
Date: 30 Mar 88 23:18:37 GMT
References: <EWFJ8jy00WA9474XZc@andrew.cmu.edu>
Reply-To: mbr@beta.UUCP (Mike Rose)
Organization: Los Alamos Natl. Lab, Los Alamos, NM
Lines: 21

In article <EWFJ8jy00WA9474XZc@andrew.cmu.edu> jj1h+@ANDREW.CMU.EDU (Joseph Jackson) writes:
>
>If a node is there, then you can expect to find this file:
>nodename::DUA0:[000000]000000.DIR
>
>Node_down = F$Search ("''Nodename'::DUA0:[000000]000000.dir") .eqs. ""
>
>This assumes that every DECnetted machine has a disk called DUA0:.


There are two problems with this.  The first you suggested: not
every machine has DUA0:.  You can easily get around this by
using "SYS$SYSDEVICE:" instead.  

The second problem is access control.  The above assumes that
there is a default decnet account, and that your node can
use it to run FAL.  While this is the default (I think),
many sites disable it.

Mike Rose
mbr@lanl.gov