use strict;

my %hash;
my $tag = 'coredump_dir';
my $default = 'none';
my $value = '/opt/lala/squid/var/cache';

$hash{$tag}{"default"} = [$default];
$hash{$tag}{"value"} = [$value];

foreach my $key (keys %hash){
    print $key . "\t";
    print $hash{$key}{"default"}[0] . "\t";
    print $hash{$key}{"value"}[0] . "\n";
}