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From: blarsen@spider.uio.no (Bjorn Larsen)
Newsgroups: comp.lang.perl
Subject: Breaking a pipe
Message-ID: <BLARSEN.90Apr11084353@spider.uio.no>
Date: 11 Apr 90 06:43:53 GMT
Sender: news@ulrik.uio.no (USENET News System)
Reply-To: bl@nac.no
Distribution: comp
Organization: USE, University of Oslo, Norway
Lines: 27



I have a Perl script that reads from a filehandle opened
with
             open(F, "tail -f somefile |");

and at some point I want to close the filehandle and reopen it.


However, according to the manpage,

                             Also, closing a pipe will wait for
             the process executing on the pipe to complete, in
             case you want to look at the output of the pipe
             afterwards.                                         

So, naturally my script goes blissfully to sleep waiting
for the pipe to complete.

How do I break a pipe if I *don't* want to look at the output of
the pipe afterwards?


--
Bjorn Larsen                University of Oslo,  Norway
                                             bl@nuug.no
                                         +47 2 45 35 30