Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP
Path: utzoo!utgpu!water!watnot!watmath!clyde!rutgers!lll-lcc!seismo!ut-sally!utah-cs!utah-gr!uplherc!nrc-ut!nrcvax!ccsi!craig
From: craig@ccsi.UUCP
Newsgroups: comp.unix.questions
Subject: Re: stty 0
Message-ID: <124@ccsi.UUCP>
Date: Thu, 26-Mar-87 15:15:10 EST
Article-I.D.: ccsi.124
Posted: Thu Mar 26 15:15:10 1987
Date-Received: Sat, 28-Mar-87 16:50:11 EST
References: <869@bc-cis.UUCP> <5914@mimsy.UUCP> <222@quacky.mips.UUCP>
Reply-To: craig@ccsi.UUCP (R. Craig Peterson)
Followup-To: /dev/null
Distribution: na
Organization: Canadian Computer Services, Inc., Thousand Oaks, CA
Lines: 34
Keywords: stty 0 drops DTR on SYS V
Summary: Works on SYS V

In article <222@quacky.mips.UUCP> dce@mips.UUCP (David Elliott) writes:
>In article <5914@mimsy.UUCP> chris@mimsy.UUCP (Chris Torek) writes:
>>In article <869@bc-cis.UUCP> raanan@bc-cis.UUCP (Raanan Herrmann) writes:
>>>My question: What does the `stty 0` command do? Does it do anything?
>>Most device drivers interpret it as `turn off DTR'.  If your modems
>>are working and properly connected, and your multiplexor supports DTR,
>>this will hang up the line.
>
>The original question is unclear. In 4.3BSD, the command "stty 0" causes
>the baud rate to be set to 0. I assume that Chris is correct in saying
>what the device driver does with this (if I don't, Chris will shoot me).
>
>So, if Raanan needs to add a "hang up the line" function to a shell,
>front-end, or other application, he can add code to set the baud rate
>to 0 (this is for BSD systems; I'm not sure about System V derivatives).

It is the same for System V.  I've used many versions, and the've all
interpreted 0 baud as turning off DTR to the attached device.  All that
is with the exception of one machine, however after several
conversations with the mfr. its working there too!

-- 
----
	"Next time someone asks you if you're a god, say YES!"
				- Ghost Busters

R. Craig Peterson
KB6NFG

U.S. SNAIL:
	CCSI, 187 E. Wilbur Rd. #1, Thousand Oaks, CA  91360

{sdcsvax|hplabs}!sdcrdcf!psivax!nrcvax!ccsi!craig
ihnp4!nrcvax!ccsi!craig