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Date:      Thu, 13 Sep 2007 12:38:43 -0700
From:      "Kurt Buff" <kurt.buff@gmail.com>
To:        "Jeffrey Goldberg" <jeffrey@goldmark.org>
Cc:        questions@freebsd.org
Subject:   Re: Scripting question
Message-ID:  <a9f4a3860709131238u18a48a48kbd06cfbc720d4e4d@mail.gmail.com>
In-Reply-To: <13D9DDEB-5AC6-4E2C-93F3-40054A97E3C9@goldmark.org>
References:  <a9f4a3860709131016w54c12b6fy94fc2b0f286aea3d@mail.gmail.com> <20070913172001.GA78799@gizmo.acns.msu.edu> <a9f4a3860709131032q21bfefc2hf8d78cae53637576@mail.gmail.com> <20070913175510.GA78984@gizmo.acns.msu.edu> <a9f4a3860709131119h2d7589aej59587749bb1fa2ef@mail.gmail.com> <13D9DDEB-5AC6-4E2C-93F3-40054A97E3C9@goldmark.org>

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On 9/13/07, Jeffrey Goldberg <jeffrey@goldmark.org> wrote:
> On Sep 13, 2007, at 1:19 PM, Kurt Buff wrote:
>
> > I think I may have a better solution. The file I'm trying to massage
> > has a predecessor - the non-unique lines are the result of a
> > concatenation of two files.
> >
> > Silly me, it's better to 'grep -v' with the one file vs. the second
> > rather than trying to merge, sort and further massage the result. The
> > fix will be to use sed against the first file to remove the ' NO',
> > thus providing a clean argument for grepping the other file.
>
> Instead of grep -v take a look at comm.
>
> -j


Interesting! I just looked at the man page, and while I don't think it
it's going to be directly useful (or I'm just not reading the page
correctly), it's a new utility to me - I'll keep it in mind for other
things.

Thanks!



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