Re: Help with pipes, buffering and pseudoterminals

Path	csiph.com!v102.xanadu-bbs.net!xanadu-bbs.net!feeder.erje.net!eu.feeder.erje.net!fu-berlin.de!uni-berlin.de!individual.net!not-for-mail
From	Gregory Ewing <greg.ewing@canterbury.ac.nz>
Newsgroups	comp.lang.python
Subject	Re: Help with pipes, buffering and pseudoterminals
Date	Wed, 08 Apr 2015 12:23:24 +1200
Lines	15
Message-ID	<cojanuFmscU1@mid.individual.net> (permalink)
References	<CAJGew6=g41cT5QXd51oaVVC5PWCnE5GWYzX5YaqDBwXb0kKUDw@mail.gmail.com> <20150407054803.GA80257@cskk.homeip.net> <mailman.85.1428403083.12925.python-list@python.org>
Mime-Version	1.0
Content-Type	text/plain; charset=ISO-8859-1; format=flowed
Content-Transfer-Encoding	7bit
X-Trace	individual.net dOEgdGTJU8FlIaBdFPP6IwiHYXbOV+tDG+kPjvrDNKUZ7OKedi
Cancel-Lock	sha1:b89S0d/5rYO6V4WVS1Ev1JXY85k=
User-Agent	Mozilla Thunderbird 1.0.5 (Macintosh/20050711)
X-Accept-Language	en-us, en
In-Reply-To	<mailman.85.1428403083.12925.python-list@python.org>
Xref	csiph.com comp.lang.python:88636

Show key headers only | View raw

Chris Angelico wrote:
> Really? I can believe that stdout and stderr are initially duplicates,
> but stdin as well? Isn't stdin opened for reading only, and
> stdout/stderr for writing only?

It depends entirely on how the process that forked your
shell process set things up, but a quick experiment I
just did in a MacOSX terminal window suggests that it's
not really bothered about that distinction:

sh-3.2$ echo foo >&0
foo

-- 
Greg

Back to comp.lang.python | Previous | Next — Previous in thread | Find similar | Unroll thread

Thread

Re: Help with pipes, buffering and pseudoterminals Chris Angelico <rosuav@gmail.com> - 2015-04-07 20:38 +1000
  Re: Help with pipes, buffering and pseudoterminals Gregory Ewing <greg.ewing@canterbury.ac.nz> - 2015-04-08 12:23 +1200

csiph-web