From: Sven Mascheck via TUHS <tuhs@minnie.tuhs.org>
To: tuhs@minnie.tuhs.org
Subject: Re: [TUHS] sh: cmd | >file
Date: Sat, 4 Jan 2020 01:53:50 +0100 [thread overview]
Message-ID: <20200104005350.GA156384@lisa.in-ulm.de> (raw)
In-Reply-To: <1inQaG-3N3-00@marmaro.de>
On Fri, Jan 03, 2020 at 06:18:00PM +0100, markus schnalke wrote:
> [2020-01-03 11:03] "Brian Zick" <brian@zick.io>
> > I'm curious to know if you have a script you used to prove these correct?
>
> We have to wait for Sven Mascheck to answer this question. He tested
> the different shells.
I guess Brian meant Steffen. I have no idea what Steffen meant with "proved
correct".
(and I believe Gunnar was not motivated to guarantee his heirloom port
to compete in production environments against modern shell variants with
continued maintenance, yet tried hard that time to find and fix as many bugs
as possible; I tried to help him a little bit that time. Just consider how
much still had been fixed by Sun even after their SVR4 sh. more corner case
bugs to be expected...)
BTW, I just typed ":|>file; echo $?" in a running shell and I was
particularly interested in the early Bourne shell variants. Unfortunately,
I was not able yet to check why the 7thEd sh yields SIGPIPE.
And ":|>>" (append) was just motivated by system call tracing (resulting in
less file IO), while I tried to find out what was happening at all, before
you pointed me to the solution "simple command".
Like you I'm interested in the possible motivations for a redirection to be
a simple command. Thus Warner and Michael really have a point about using
plain redirection only, or in connection with exec, respectively.
Sven
next prev parent reply other threads:[~2020-01-04 0:59 UTC|newest]
Thread overview: 56+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-01-03 12:45 markus schnalke
2020-01-03 14:00 ` Steffen Nurpmeso
2020-01-03 17:03 ` Brian Zick
2020-01-03 17:18 ` markus schnalke
2020-01-04 0:53 ` Sven Mascheck via TUHS [this message]
2020-01-04 20:41 ` Steffen Nurpmeso
2020-01-03 19:38 ` markus schnalke
2020-01-03 19:44 ` Warner Losh
2020-01-03 22:49 ` Michael Parson
2020-01-03 23:32 ` Dave Horsfall
2020-01-04 2:58 Doug McIlroy
2020-01-04 10:07 ` markus schnalke
2020-01-04 11:47 ` Robert Clausecker
2020-01-04 22:31 ` Chet Ramey
2020-01-04 21:02 ` Dave Horsfall
2020-01-04 21:06 ` Jon Steinhart
2020-01-05 0:03 ` Eric Allman
2020-01-05 1:49 ` Adam Thornton
2020-01-05 2:44 ` Chet Ramey
2020-01-05 8:15 ` Brantley Coile
2020-01-05 15:16 ` Chet Ramey
2020-01-04 21:11 ` Dave Horsfall
2020-01-04 21:39 ` Warner Losh
2020-01-04 22:19 ` Terry Jones
2020-01-04 22:33 ` Chet Ramey
2020-01-04 23:53 ` Dave Horsfall
2020-01-05 0:04 ` Andreas Kusalananda Kähäri
2020-01-05 2:41 ` Chet Ramey
2020-01-05 13:45 ` Sven Mascheck via TUHS
2020-01-05 15:18 ` Chet Ramey
2020-01-05 21:21 ` Dave Horsfall
2020-01-06 13:53 ` Chet Ramey
2020-01-06 15:42 ` Brantley Coile
2020-01-06 15:46 ` arnold
2020-01-06 16:13 ` Clem Cole
2020-01-06 20:44 ` arnold
2020-01-06 20:51 ` Steve Nickolas
2020-01-06 21:32 ` Clem Cole
2020-01-06 21:39 ` Brad Spencer
2020-01-06 21:29 ` Dave Horsfall
2020-01-06 21:55 ` Chet Ramey
2020-01-06 22:22 ` Dave Horsfall
2020-01-06 22:52 ` Dan Cross
2020-01-07 0:50 ` Adam Thornton
2020-01-06 22:10 ` Bakul Shah
2020-01-04 22:44 ` markus schnalke
2020-01-04 23:01 ` Terry Jones
2020-01-04 22:22 ` Dave Horsfall
2020-01-06 3:24 Brian Walden
2020-01-06 15:42 ` Richard Salz
2020-01-06 15:45 ` Brantley Coile
2020-01-06 16:11 Brian Walden
2020-01-06 16:33 ` Clem Cole
2020-01-06 19:47 Doug McIlroy
2020-01-07 4:49 Brian Walden
2020-01-07 5:03 Brian Walden
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