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From: shaw@paralogics.UUCP (Guy Shaw)
Newsgroups: comp.unix.wizards
Subject: Looking for tcsh binary which uses vfork
Keywords: tcsh, vfork, SunOS 4.0
Message-ID: <243@paralogics.UUCP>
Date: 5 Sep 89 09:04:40 GMT
Organization: Paralogics; Santa Monica, CA
Lines: 38


In article <712@skye.ed.ac.uk>, richard@aiai.UUCP (Richard Tobin) writes:
> [. . .]
> Running under SunOS 4, we occasionally encounter an annoying problem:
> a pipeline (eg cat /etc/passwd | more) will stop, with the message
>
>   Stopped (tty output)
>
> [. . .]
> Presumably using vfork() forces things to happen in the right order.


In article <1127@tukki.jyu.fi>, eloranta@tukki.jyu.fi (Jussi Eloranta) writes:
> We have the same problem here.... (with tcsh from tut.cis.ohio-state.edu)
> Does anyone have a fixed version? We don't (yet) have the sources so I would
> need binaries...

I have the same problem.  I am using the binary version for Sun 3's
running SunOS 3.4, from tut.cis.ohio-state.edu, but am running SunOS 4.0.
It seemed like I got away with it until I noticed this problem when I
piped something to `less'.  At first, I thought maybe it was a problem
with `less', but it is just that I didn't notice `more' exhibiting that
behavior, because I use `less' a great deal more than `more'.

The idea that using vfork() would cure this problem sounds reasonable to me.
Can anyone verify that this is all that is needed?  Can anyone direct me
to a binary of tcsh for Sun 3, which has a fix for this problem?

Thanks in advance.
--
Guy Shaw
Paralogics
paralogics!shaw@uunet.uu.net  or  uunet!paralogics!shaw