Date: Sun, 2 Jun 2002 20:53:38 +0200 From: Benoit Lacherez <blacherez@ac-bordeaux.fr> To: Matthew Hunt <mph@astro.caltech.edu> Cc: j mckitrick <jcm@FreeBSD-uk.eu.org>, freebsd-questions@FreeBSD.ORG Subject: Re: Why does 'sed' delete my input file? Message-ID: <20020602205338.A22684@bisclavret> In-Reply-To: <20020531094720.C34758@wopr.caltech.edu>; from mph@astro.caltech.edu on Fri, May 31, 2002 at 09:47:20AM -0700 References: <20020531130029.B28925@dogma.freebsd-uk.eu.org> <20020531141421.A72043@bisclavret.iris33.ac-bordeaux.f> <20020531132211.A29199@dogma.freebsd-uk.eu.org> <20020531094720.C34758@wopr.caltech.edu>
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Matthew Hunt a écrit : > On Fri, May 31, 2002 at 01:22:11PM +0100, j mckitrick wrote: > > > | cat file1 | sed 's/foo/bar/g' > file1 > > > > Perfect! > > I don't think that's guaranteed to work at all. There's no assurance > that cat will have read then entire contents of file1 before the shell > opens it for writing. > You're right! I had never done that with a big file, but actually it is truncated. So I'll do with a temporary file, now. Thank you very much! -- Benoit Lacherez Académie de Bordeaux -- CATICE Projet de traduction de la documentation de Python: http://frpython.sourceforge.net/ To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message
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