Date: Thu, 04 Oct 2001 21:04:51 -0600 From: Chris Fedde <chris@fedde.littleton.co.us> To: "Kory Hamzeh" <kory@avatar.com> Cc: freebsd-questions@FreeBSD.ORG Subject: Re: Real dumb shell script/awk question Message-ID: <200110050304.f9534pK39202@fedde.littleton.co.us> In-Reply-To: <001201c14d37$3a59fac0$14ce21c7@avatar.com>
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On Thu, 4 Oct 2001 17:46:53 -0700 "Kory Hamzeh" wrote:
+------------------
|
| 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.
+------------------
Awk is your friend
$ cat t
asdf|trew|agfd
asdf|asdf|435
wer|asgf|bwhw
qwert|qewrt|asdf
$ awk -F'|' -e '$1 == $2 {print $3}' t
435
Good luck!
--
Chris Fedde
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