Use a state variable. 
use warnings;
use strict;

my $input_name = 'DENIRO ROBERT';
my $print_flag = 0;
while (<DATA>) {
    chomp;
    if (/^[a-z]/i) {
        $print_flag = ($_ eq $input_name)
    }
    print "$_\n" if $print_flag;
}

__DATA__
DOE JOHN
123
DENIRO ROBERT
123
123
123
CUBE ICE
123
123

[download]
prints: 
DENIRO ROBERT
123
123
123

[download]

In reply to Re: Extract lines from text file by toolic
in thread Extract lines from text file by JonDepp

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