Re: Fwd: Re: grep command not working as expected
- From: Oliver Fromme <olli@xxxxxxxxxxxxxxxxx>
- Date: Thu, 28 Sep 2006 13:57:25 +0200 (CEST)
Stephen Allen <freebsduk@xxxxxxxxxxxxxx> wrote:
A simple grep command, 'grep -vf patternfile inputfile' works on Linux,
but the same command doesn't work on FreeBSD-6.1.
Can you provide an example, please? "grep -fv" seems to
work fine for me on FreeBSD 6.1.
To make it work I found I had to use -F to force the interpretation of
fixed-strings. I don't know why it made a difference from Linux, and
nothing in the man page appears to mention why.
The -F option is documented in the manual page. Without
it, patterns are interpreted as basic regular expressions.
With that option, they're interpreted as fixed string.
If Linux behaves differently, then that's a bug in Linux
rather than in FreeBSD. But then again, both Linux and
FreeBSD use GNU grep ...
Best regards
Oliver
--
Oliver Fromme, secnetix GmbH & Co. KG, Marktplatz 29, 85567 Grafing
Dienstleistungen mit Schwerpunkt FreeBSD: http://www.secnetix.de/bsd
Any opinions expressed in this message may be personal to the author
and may not necessarily reflect the opinions of secnetix in any way.
"C++ is to C as Lung Cancer is to Lung."
-- Thomas Funke
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