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000216_news@columbia.edu_Mon Nov 21 17:19:20 1994.msg
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From: fdc@watsun.cc.columbia.edu (Frank da Cruz)
Newsgroups: comp.protocols.kermit.misc
Subject: Re: Is there anyway to quit kermit without hanging up?
Date: 21 Nov 1994 17:19:20 GMT
Organization: Columbia University
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References: <Pine.OSF.3.91a.941120223713.15730A-100000@saul1.u.washington.edu>
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In article <Pine.OSF.3.91a.941120223713.15730A-100000@saul1.u.washington.edu>,
Micah Anderson <micah@u.washington.edu> wrote:
>I am running kermit on ultrix 4.3 and I want to be able to call up with
>kermit and then quit kermit, but NOT hangup the modem - so I can then run
>slattach and start a slip connection. The reason I want to do this is
>because I cannot get the chat script for the slip.hosts to work and
>figured that if I can just call up with kermit and then get out of kermit
>but leave the tty attached but accessable via slattach I could then start
>slip going...
>
Since UNIX is a "real operating system" -- unlike, say, DOS -- processes
close all open file handles when they exit. So no, you can't use C-Kermit
on UNIX to open a connection and then exit and expect for it to be left
open, at least not unless you configure the modem to ignore DTR, and take
a few other esoteric steps, none of which are recommended as they pose
distinct security risks.
But there are several ways for C-Kermit to give access to its connection to
other processes, which are covered mostly in section 11 of the file
ckuker.bwr, which comes with C-Kermit 5A(190). These include PUSHing from
C-Kermit, suspending C-Kermit, and forking (via ! or REDIRECT) other processes
from C-Kermit. So read this material, and also read about the new (to edit
190) REDIRECT command in the 5A(190) ckcker.upd file.
- Frank