Path: csiph.com!usenet.pasdenom.info!news.albasani.net!newsfeed.freenet.ag!news2.euro.net!newsgate.cistron.nl!newsgate.news.xs4all.nl!post.news.xs4all.nl!not-for-mail Return-Path: X-Original-To: python-list@python.org Delivered-To: python-list@mail.python.org X-Spam-Status: OK 0.000 X-Spam-Evidence: '*H*': 1.00; '*S*': 0.00; 'url:pypi': 0.03; 'pypi': 0.07; 'pypy': 0.07; 'python': 0.09; 'fork': 0.09; 'received:80.91': 0.09; 'received:80.91.229': 0.09; 'received:gmane.org': 0.09; 'received:list': 0.09; 'stdout': 0.09; 'subject:into': 0.09; 'subject:process': 0.09; 'index': 0.13; 'yet.': 0.13; '(note': 0.16; 'background,': 0.16; 'finney': 0.16; 'for,': 0.16; 'received:80.91.229.3': 0.16; 'received:plane.gmane.org': 0.16; 'setsid': 0.16; 'url:debian': 0.16; 'wrote:': 0.17; 'appears': 0.18; 'module': 0.19; 'discussion': 0.20; 'defined': 0.22; "haven't": 0.23; 'script': 0.24; 'header:User-Agent:1': 0.26; 'header:X-Complaints-To:1': 0.28; 'writes:': 0.29; 'url:mailman': 0.29; '(and': 0.32; 'url:python': 0.32; 'url:listinfo': 0.32; 'asked': 0.33; 'to:addr :python-list': 0.33; 'ben': 0.35; 'path': 0.35; 'something': 0.35; 'received:org': 0.36; 'url:org': 0.36; 'closing': 0.36; 'subject: (': 0.36; 'subject:: ': 0.38; 'some': 0.38; 'to:addr:python.org': 0.39; 'header:Received:5': 0.40; 'url:lists': 0.65; 'skip:\xe2 10': 0.66; '8bit%:21': 0.69; 'url:a': 0.72; 'goal': 0.74; 'belief': 0.84; 'subject:Making': 0.84 X-Injected-Via-Gmane: http://gmane.org/ To: python-list@python.org From: Ben Finney Subject: Making a Unix daemon process (was: Forking into the background (Linux)) Date: Mon, 24 Dec 2012 18:17:56 +1100 References: <50d7b654$0$6941$e4fe514c@news2.news.xs4all.nl> Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 8bit X-Gmane-NNTP-Posting-Host: rasputin.madmonks.org X-Public-Key-ID: 0xBD41714B X-Public-Key-Fingerprint: 9CFE 12B0 791A 4267 887F 520C B7AC 2E51 BD41 714B X-Public-Key-URL: http://www.benfinney.id.au/contact/bfinney-gpg.asc X-Post-From: Ben Finney User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/23.4 (gnu/linux) Cancel-Lock: sha1:ZB0lKSAK6lUJK3DdZ8q7YRDn74Q= X-BeenThere: python-list@python.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: General discussion list for the Python programming language List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Newsgroups: comp.lang.python Message-ID: Lines: 29 NNTP-Posting-Host: 2001:888:2000:d::a6 X-Trace: 1356333490 news.xs4all.nl 6881 [2001:888:2000:d::a6]:43472 X-Complaints-To: abuse@xs4all.nl Xref: csiph.com comp.lang.python:35444 Hans Mulder writes: > On 24/12/12 01:50:24, Olive wrote: > > My goal is to write a script that 1) write something to stdout; then > > fork into the background, closing the stdout (and stderr, stdin) pipe. > > > > I have found this answer (forking -> setsid -> forking) > > http://stackoverflow.com/a/3356154 You're following a path that leads to the desire for a “daemon” . > You may want to look at the python-daemon module on Pypy, which > appears to do what you need, including some features you haven't asked > for, yet. It's even better when you look at it on PyPI (note that PyPy is a Python implementation, PyPI is an index of Python packages). The discussion forum for ‘python-daemon’ development is at . -- \ “Faith may be defined briefly as an illogical belief in the | `\ occurrence of the improbable.” —Henry L. Mencken | _o__) | Ben Finney