Date: Mon, 5 Oct 1998 08:06:55 -0500 (CDT) From: Mike Ekholm <ekholm@visi.com> To: Steve Howe <groggy@iname.com> Cc: freebsd-questions@FreeBSD.ORG Subject: Re: talk to cuaa0 Message-ID: <Pine.GSO.4.02.9810050804080.8739-100000@isis.visi.com> In-Reply-To: <Pine.BSF.3.96.981004224533.3032A-100000@abc.xyz.net>
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On Sun, 4 Oct 1998, Steve Howe wrote:
> On Sun, 4 Oct 1998, Mike Ekholm wrote:
>
> > I am trying to get a UPS monitoring system going, and in order to do this,
> > I need to send "s" to /dev/cuaa0 set at 1200bps and log the output to a
> > file. I am trying to get this done with cron, but I have not been able to
> > find a non interactive way of doing this. Everything I have tried requires
> > some user input. I am thinking kermit, but so far once I do "connect" the
> > script stops working.
>
> i'm going to get killed for saying this, but you can just "echo s >
> /dev/cuaa0". eeks. from experience, i find i can use the com ports just
> like any other file as long as the speeds are below 9600. faster than
> that, and you start losing characters. this is on lightly loaded
> machines. and this is only a quick hack. i guess my point is that you
> shouldn't be afraid to use them. everyone will tell you there are better
> methods, and i'm not going to argue. a simple shell script will
> suffice ... + cron.
>
I have tried this, but I was unable to get the output from cuaa0, so I
gave up on it. Was there something I was missing?
-Mike
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