Assuming a %stats hash has been declared, the File::Find callback can be as simple as: 

sub wanted {
    return unless -f;
    /(?<!^)[.]([^.]+)$/;
    ++$stats{$File::Find::dir}{$1 || ''};
}

[download]

That will cause all files without an extension, as well as hidden files without an extension (e.g. .bashrc), to be counted together under a '' key. Everything else will counted under keys without a leading '.', e.g. 'pl', 'txt', 'png', etc.

If counts for individual directories aren't required, that can be simplified even further by just using: 

++$stats{$1 || ''};

[download]

-- Ken

In reply to Re^2: Perl Directory file extension stats. by kcott
in thread Perl Directory file extension stats. by sidsinha

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