The following will loop until the user first types in a PPID, then until they type 'y' to confirm it.

It then writes the PPID to $outfile in the $dir directory.

use strict;
use warnings;

my $outfile = 'ppid_file.txt';
my $dir = 'c:/users/lastgen/docs/saved_ppid';

my $input;
my $ok = '';

while ($ok !~ /[Yy]/){
    print "SCAN PPID: ";
    $input = <STDIN>;
    chomp $input;

    print "Make sure you confirm the PPID before you proceed...\n\n";

    print "PPID: $input \n\n";

    print "ok? [y/n]: ";
    $ok = <STDIN>;
}

open my $wfh, '>', "$dir/$outfile"
  or die "can't open the damned output file! $!";

print $wfh $input;
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