File::Find is good for this sort of thing, 

use File::Find;
my @dupes;
{
    my %dirnames;
    sub dupe_dir {
        -d or return;
        if (exists $dirnames{$_}) {
            push @dupes, $File::Find::name;
        }
        else {
            ++$dirnames{$_}
        }
        1;
    }
}

find(\&dupe_dir)
print $_, $/ for @dupes;

[download]
That searches everything under the current directory for duplicate directory names. The search is breadth first. Caution, untested.

After Compline,
Zaxo

In reply to Re: Duplicate Directory Names by Zaxo
in thread Duplicate Directory Names by tperdue

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