readdir returns a list of names, not of fully qualified paths. You can see that by printing out $_ and comparing that against "e:\\core\\ops_utilities\\$_". Only the latter will be what you expect.

Whenever you find things from a grep not returning what you think, it helps to modify the grep to tell you what it does:

my @files = grep { warn "Checking '$_' for -d:" . -d $_; !-d $_} readd
+ir(DIR);

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In reply to Re: -d on windows by Corion
in thread -d on windows by Scarborough

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