Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!ames!pasteur!ucbvax!decwrl!sun!pitstop!sundc!seismo!uunet!wa3wbu!john
From: john@wa3wbu.UUCP (John Gayman)
Newsgroups: comp.unix.microport
Subject: Re: shutting off DTR
Summary: Doesn't work on V/386
Message-ID: <250@wa3wbu.UUCP>
Date: 24 Feb 89 16:10:34 GMT
References: <459@ramona.UU.NET>
Organization: WA3WBU, Marysville,PA
Lines: 25

In article <459@ramona.UU.NET>, andrew@ramona.UU.NET (Andrew Ernest) writes:
> checking the file systems.  This evening I discovered a simple little
> trick to drop DTR which works on my 2.3 system:
> 
> 	stty 0 -hupcl < /dev/ttynn
> 

   I have been having the same problem with V/386 3.0e. When I go to single
 user mode to do system backups the DTR goes out for a moment and then
 comes right back on. Likewise, I have a Hayes SM2400 thats used for 
 outgoing calls only. After using CU, the DTR will remain on. I tried the
 above command and it acted like single-user mode; the DTR went out breifly
 and then came back on. However, I tried simply "stty 0 < /dev/ttynn"
 and this turned of DTR and it stayed off! Thanks for the tip. I'll be
 using this during backups to avoid unwanted calls.


						John



-- 
John Gayman, WA3WBU              |           UUCP: uunet!wa3wbu!john
1869 Valley Rd.                  |           ARPA: john@wa3wbu.uu.net 
Marysville, PA 17053             |           Packet: WA3WBU @ AK3P