Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]


Groups > comp.lang.python > #90973

Re: fork/exec & close file descriptors

Path csiph.com!v102.xanadu-bbs.net!xanadu-bbs.net!feeder.erje.net!1.eu.feeder.erje.net!ecngs!feeder2.ecngs.de!217.188.199.168.MISMATCH!takemy.news.telefonica.de!telefonica.de!newsfeed.xs4all.nl!newsfeed4.news.xs4all.nl!xs4all!newsgate.cistron.nl!newsgate.news.xs4all.nl!post.news.xs4all.nl!not-for-mail
Return-Path <ian.g.kelly@gmail.com>
X-Original-To python-list@python.org
Delivered-To python-list@mail.python.org
X-Spam-Status OK 0.038
X-Spam-Evidence '*H*': 0.92; '*S*': 0.00; 'linux,': 0.07; 'subject:file': 0.07; 'skip:/ 10': 0.09; 'symlink': 0.16; 'trusty': 0.16; 'wrote:': 0.18; 'seems': 0.21; 'equivalent': 0.26; 'possibly': 0.26; 'subject:/': 0.26; 'header:In-Reply-To:1': 0.27; 'chris': 0.29; 'am,': 0.29; 'message-id:@mail.gmail.com': 0.30; 'equivalent.': 0.31; 'this.': 0.32; 'linux': 0.33; 'received:google.com': 0.35; 'ubuntu': 0.36; 'shows': 0.36; 'two': 0.37; 'system,': 0.38; 'to:addr:python-list': 0.38; 'pm,': 0.38; 'itself': 0.39; 'use.': 0.39; 'to:addr:python.org': 0.39; 'read': 0.60; 'subject: & ': 0.68; '2015': 0.84
DKIM-Signature v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:in-reply-to:references:from:date:message-id:subject:to :content-type; bh=XjpegXlRHuOwaqZ7jWnAXI9RunXmRpPbpEv+VQHbnk0=; b=TLOVBSrEevH5e4C6ex5A0nJ0dn9iU7k1iDFLO/qvUMpeu4iS3dQ2ZI5ytfTA+IpiCG VwMHi/rdRC61bTWLZxm/jHkeTZ3cAbwQ0+loClEKhsGkkoS/zZIdwnr9Vv3YnTnDrDS1 yiWBcxXnmQiVMIrRlWEkS4nWNXF+RE++cQI+PfUCVyeaefytq9fuyHfaF9X4WdFZ1BKw ow3E7TSS4CkeCn5NYp5SfVU7nyO48hapejQrhC7XcWnEceJNE1wHYD4MGs0Y4FcEqCIl klXYW15b1A8+ks6AmldNhZXjjOKfyTbc51FGKy9VgbClRwU2KsY8uxXkf7e7dLYTwEgE 4AfQ==
X-Received by 10.50.30.105 with SMTP id r9mr30187585igh.11.1432146684723; Wed, 20 May 2015 11:31:24 -0700 (PDT)
MIME-Version 1.0
In-Reply-To <cs258eFnssnU1@mid.individual.net>
References <CANc-5UyeaWqThGFSAuGskz+S2Lrgq0ia9W9DHAie28t9GY+sww@mail.gmail.com> <CAPTjJmoj4STV9+t2-9JWed3t6Hxk5ibtaxYSFfX31oGz=kKR1g@mail.gmail.com> <CANc-5UwUxYjg=rQQ0Z_nM3s7o4+ghVYzG-9ajQY=LERWAsPrKw@mail.gmail.com> <CAPTjJmrdPcW8EkLR9Kq+n9sYEWB8eJ3fg=_JFQ2x_4QhDeg90Q@mail.gmail.com> <mailman.139.1432045882.17265.python-list@python.org> <cs258eFnssnU1@mid.individual.net>
From Ian Kelly <ian.g.kelly@gmail.com>
Date Wed, 20 May 2015 12:30:44 -0600
Subject Re: fork/exec & close file descriptors
To Python <python-list@python.org>
Content-Type text/plain; charset=UTF-8
X-BeenThere python-list@python.org
X-Mailman-Version 2.1.20+
Precedence list
List-Id General discussion list for the Python programming language <python-list.python.org>
List-Unsubscribe <https://mail.python.org/mailman/options/python-list>, <mailto:python-list-request@python.org?subject=unsubscribe>
List-Archive <http://mail.python.org/pipermail/python-list/>
List-Post <mailto:python-list@python.org>
List-Help <mailto:python-list-request@python.org?subject=help>
List-Subscribe <https://mail.python.org/mailman/listinfo/python-list>, <mailto:python-list-request@python.org?subject=subscribe>
Newsgroups comp.lang.python
Message-ID <mailman.180.1432146694.17265.python-list@python.org> (permalink)
Lines 18
NNTP-Posting-Host 2001:888:2000:d::a6
X-Trace 1432146694 news.xs4all.nl 2838 [2001:888:2000:d::a6]:37122
X-Complaints-To abuse@xs4all.nl
Xref csiph.com comp.lang.python:90973

Show key headers only | View raw


On Tue, May 19, 2015 at 7:10 PM, Gregory Ewing
<greg.ewing@canterbury.ac.nz> wrote:
>> On Tue, May 19, 2015 at 8:54 AM, Chris Angelico <rosuav@gmail.com
>> <mailto:rosuav@gmail.com>> wrote:
>>
>>     On Linux (and possibly some other Unixes), /proc/self/fd may be of
>>     use.
>
>
> On MacOSX, /dev/fd seems to be the equivalent of this.

Not a perfect equivalent. On Linux, ls -lF /proc/self/fd shows the
contents as symlinks, which is handy since you can just read the links
to see what they're pointing to. On OSX, ls -lF /dev/fd shows three
ttys and two directories.

Though I also note that on my Ubuntu Trusty system, /dev/fd is itself
a symlink to /proc/self/fd.

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


Thread

Re: fork/exec & close file descriptors Skip Montanaro <skip.montanaro@gmail.com> - 2015-05-19 09:31 -0500
  Re: fork/exec & close file descriptors Gregory Ewing <greg.ewing@canterbury.ac.nz> - 2015-05-20 13:10 +1200
    Re: fork/exec & close file descriptors Ian Kelly <ian.g.kelly@gmail.com> - 2015-05-20 12:30 -0600

csiph-web