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Re: validating file with perl

by si_lence (Deacon)
on Jul 17, 2013 at 12:26 UTC ( [id://1044797] : note . print w/replies, xml ) Need Help??


in reply to validating file with perl

Just one more solution using the input record separator special variable ,$/. It does make a few assumption about the structure of the data though.

use strict; use warnings; my $header = <DATA>; $/ = "\n\n"; while (<DATA>) { if (/ 1\n.* 3\n/s) { my $id = substr($_,0,11); print "good for $id\n"; } } __DATA__ field1 field2 3-2000/7.48 1 3-2000/7.48 2 3-2000/7.48 2 3-2000/7.48 2 3-2000/7.48 2 3-2000/7.48 2 3-2000/7.48 2 3-2000/7.48 3 4-0000/8.40 2 4-0000/8.40 2 4-0000/8.40 2 4-0000/8.40 2 4-0000/8.40 2 4-0000/8.40 2 4-0000/8.40 3