Log off idle users by tty?

I'm running SCO 3.2.4 without a DOS partition.  I have two modem lines which have idle
users on a long distance call for hours.  I don't want to use the idle out feature or the autolog off because other users running long posting or printing jobs appear idle and will get logged off too (or at least I think they will).  Is there any way to auto log off idle tty1A and tty2A? Note: I don't know if this makes a difference, but I am not using the uucp.  We are simply using the modems for dial in from PC to the Unix box.  I want this to be an automatic process without any assistance from root.  I'm the only IT person for the company and don't have time to babysit these users.  Thanks.
brandoAsked:
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xilefConnect With a Mentor Commented:
What you are looking for is idled.

You can get it e.g. from ftp://sunsite.cnlab-switch.ch/mirror/SuSE/SuSE-Linux/5.2/full-names/i386/idled* or from any other SuSE mirror.
There are rpms for SuSE-Linux but there sources are also there so you should be able to compile them on your system too.

I haven't used idled myself, but the description seems to describe what you are looking for.

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JYoungmanCommented:
Yes.

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brandoAuthor Commented:
Adjusted points to 50
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brandoAuthor Commented:
Edited text of question
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ahoffmannCommented:
kill -9 <lowest pid of process using tty2A && pid is a shell>
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ahoffmannCommented:
as root:
kill -9 <lowest pid of process using tty2A && pid is a shell>
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shchukaCommented:
I think what brando wants is to have those processes killed automatically, without root's intervention.
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brandoAuthor Commented:
Edited text of question
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ahoffmannCommented:
Write a script using the "w" or "ps ax" command to identify the users you want to kick off, thenn kill there session shell.

Call this script via cron.
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ecwCommented:
Set them up as ksh users and set TMOUT in their .profile.  eg.

 typeset -r TMOUT=600  # 10 minutes grace
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brandoAuthor Commented:
ecw's response was very close.  This does log out the user's; however, our software runs in the sh shell.  Once switched over to this shell it logs the user out of ksh but does not log off the modems.  At this point I give up.
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brandoAuthor Commented:
I've got it.  I was making this far too complicated.  I disable the actual device (tty1A), connected to the control device (tty1a).  Sent the command to change the S19 register for the modem to 15 (ATS19=15).  Enable tty1A.  It works.  
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