Date: Fri, 5 Oct 2001 13:08:04 -0700 (PDT) From: Radhika Sambamurti <radhika_narendran@yahoo.com> To: freebsd-questions@freebsd.org Subject: Fwd: RE: Real dumb shell script/awk question Message-ID: <20011005200804.92243.qmail@web9307.mail.yahoo.com>
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Another solution:
--- "Lowden, James K" <LowdenJK@bernstein.com> wrote:
> From: "Lowden, James K" <LowdenJK@bernstein.com>
> To: "'Radhika Sambamurti'" <radhika_narendran@yahoo.com>
> Subject: RE: Real dumb shell script/awk question
> Date: Fri, 5 Oct 2001 12:27:13 -0400
>
> Done, with awk.
>
> Create a file t:
>
> $ cat > t
> x|y|z
> A|B|C
> ^D
>
> > if field X is equal to value Y, then print the value of
> field Z
> [passing an 'x' to a variable named 'X' and assuming the
> first column is the
> one to test]:
>
> $ awk -F '|' -v X=x 'match(X, $1) {print $3}' t
> (output): z
>
> I don't know what is meant by "The user must be able to
> specify X, Y, and Z
> on the command line." That both the values to search for
> *and* which
> columns to search in are to be specified as parameters?
>
> --jkl
>
> -----Original Message-----
> From: Radhika Sambamurti
> [mailto:radhika_narendran@yahoo.com]
> Sent: October 5, 2001 10:40 AM
> To: jklowden@bernstein.com
> Subject: Fwd: Real dumb shell script/awk question
>
>
> A FREEBSD LIST QUESTION
>
> I think this is up your ally, O fearless database guru.
> I thought of using Ksh
> so i would read in the variables into var1, var2
> then grep for var1 and var2
> seems like i dont need awk.
> whatdyou think?
>
> radhika
>
>
> --- Kory Hamzeh <kory@avatar.com> wrote:
> > From: "Kory Hamzeh" <kory@avatar.com>
> > To: <freebsd-questions@freebsd.org>
> > Subject: Real dumb shell script/awk question
> > Date: Thu, 4 Oct 2001 17:46:53 -0700
> >
> >
> > I need to bang together a simple shell script to parse
> a
> > flat ascii
> > database. The fields are variable width, but each field
> > is separated by the
> > "|" character. Basically, all this script needs to do
> is
> > to read the
> > database, one line at a line, and if field X is equal
> to
> > value Y, then print
> > the value of field Z. The user must be able to specify
> X,
> > Y, and Z on the
> > command line.
> >
> > Now, for the life of me, I can't seem to figure out a
> > simple way of doing
> > this with a bourne shell script. I think awk can do it,
> > but the man pages
> > didn't help me too much with the language. I know other
> > language, like perl,
> > are probably better suited, but I need to customize
> this
> > script per the
> > clients request, and it will only be needed for a
> couple
> > of weeks and he'll
> > never need this again.
> >
> > Any tips on how to do this? I'm sure there is a simple
> > way and I'm drawing a
> > blank.
> >
> > Thanks,
> > Kory
> >
> >
> > To Unsubscribe: send mail to majordomo@FreeBSD.org
> > with "unsubscribe freebsd-questions" in the body of the
> message
>
>
> =====
> It's all a matter of perspective. You can choose your
> view by choosing where
> to stand.
> --Larry Wall
>
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=====
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