Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!b-tech!zeeff
From: zeeff@b-tech.ann-arbor.mi.us (Jon Zeeff)
Newsgroups: comp.mail.elm
Subject: Re: newmail also displays on console (bug)
Message-ID: <9079@b-tech.ann-arbor.mi.us>
Date: 8 Mar 89 03:39:26 GMT
References: <316@wubios.wustl.edu> <890001@hpausla.HP.COM> <5142@b-tech.ann-arbor.mi.us> <4774@pbhyf.PacBell.COM> <2918@epimass.EPI.COM> <117@titania.warwick.ac.uk>
Reply-To: zeeff@b-tech.ann-arbor.mi.us (Jon Zeeff)
Organization: Branch Technology Ann Arbor, MI
Lines: 25

>>>Newmail already obeys SIGHUP. This particular user's environment is such that
>>>the SIGHUP is not being sent to newmail and that's the problem.

Old versions of newmail didn't set things up to die on SIGHUP.  New ones
will.

>no process group manipulation.  The C-Shell, however, puts each `job' in it's
>own process group, so that the shell can manipulate who's allowed to talk to
>the terminal.  It does not cause SIGHUPs to be ignored when you background a
>job, it's just that the jobs never get a SIGHUP, because they're not in the
>process group of the terminal.  Presumably other shells with job control must
>do the same.

Not on this system (sys V.3).  SIGHUPS _are_ ignored on csh & jobs and a 
program must change it if it wants otherwise.  SIGHUPS _are_ sent when 
you log out.  

You may be correct about systems with job control but it seems like a 
major problem.  You're saying that SIGHUP is often worthless on such a 
system.  


-- 
  Jon Zeeff			zeeff@b-tech.ann-arbor.mi.us
  Ann Arbor, MI			mailrus!b-tech!zeeff