Re: question in using cat/more in shell script

From: John W. Krahn (someone_at_example.com)
Date: 08/28/04 

Date: Sat, 28 Aug 2004 09:41:08 GMT

Gladiator wrote:
> Hi: I am trying to access a particular line in
> a text file using a script. The idea is to write
> out a specified line (after a certain ID has been
> identified) to another file. Here is what I wrote:
>
> ===============================
> #!/bin/csh
>
> # ========= set file name ==========
> set filename = data.dat
>
> # ======= set identifier ===========
> set id = ABC
>
> # ======== find line number of identifier =======
> set linenum = ` cat -n $filename | grep $id `
>
> # ======== the line to write out is 4 lines below identifier ======
> @ dispnum = $linenum[1] + 4
>
> # ======= more the line 4 lines below identifier ========
> more -1 +$dispnum $filename > outfile.dat

Will this do what you want?

grep -A 4 $id $filename | tail -1 > outfile.dat

John 

-- 
use Perl;
program
fulfillment

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