A bit more general approach to list all keys and strings in this complex structure:

my $VAR1 = {
'comp1' => {
'cmd2' => [
[ 'test2', 'type1', 'view1' ]
],
'cmd1' => [
[ 'test1', 'type1', 'view1' ],
[ 'test2', 'type1', 'view1' ]
]
}
};
my $array = [];
sub foo {
        my ($ref,$array) = @_;
        if (ref $ref eq 'ARRAY') {
         foreach my $ret (@{$ref}) {
                     if (ref $ret ne '') {
                        foo($ret,$array);
                   } else {
                          push @{$array},$ret;
                        }
                }
        } elsif (ref $ref eq 'HASH') {
                foreach my $ret (keys %{$ref}) {
                        if (ref $ref->{$ret} ne '') {
                                        push @{$array}, $ret;
                                        foo($ref->{$ret},$array);
                        } else {
                                push @{$array},$ref->{$ref};
                        }
                }
        }
}
foo($VAR1,$array);
print " @{$array} \n";
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I know the code is ugly, i tried to code fast and this ends up from it. Please point out mistakes politely, thank you.