perl -MData::Dumper -e "@arr=['a','b']; print Dumper (\@arr)"
$VAR1 = [
          [
            'a',
            'b'
          ]
        ];


##</code><code>##

perl -MData::Dumper -e "@arr1=qw(a b);@arr2=qw(c d);foreach (@arr1,@arr2){print qq([$_]\n) }"
[a]
[b]
[c]
[d]