Hi,

What you are doing will fail. When you slurp in a file using a while loop it is read in a line at a time.

You also need to add < an > around your file handle. In your example you are testing if $fh is defined. Your code will never break out of the loop. In the following code I open the input file, loop over it looking for the start pattern and then end pattern. I then use a var to toggle true/false Not the best way to do this however it works.

-Kiel R Stirling 
#!/usr/bin/perl -w
use strict;

open IN, "/tmp/p.txt" or die $!;
open OUT, ">/tmp/temp.log" or die "can not open file log : $!\n" ;

my $start = 0;
while(<IN>){
        if (/<Pattern1/) {
                $start = 1;
                next;
        } elsif (/<Pattern2/) {
                $start = 0;
                next;
        }
        print OUT if $start;

}
close IN;
close OUT;

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In reply to Re^6: Extract lines between two patterns by kielstirling
in thread Extract lines between two patterns by mnithink

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