I of course like this one liner! In this case however, I think just print is better 
dir /s /b c: | perl -nE"length($_) > 10 && print"

[download]
as the dir command already puts in new lines so the extra one by "say" (Note to OP: "say" is the 5.10 feature) could be distracting.

In reply to Re^2: Identifing all filenames over 250 letters long by Marshall
in thread Identifing all filenames over 250 letters long by Win

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