You're trying to create folders in root '/' and dont have proper permission. Try make_path("one/two/three"); or make_path("./one/two/three");

EDIT: Also, you can test if a dir exists before creating it. 
next if (-d $dir);    #will skip to next dir IF target dir exists
make_path("one/two/three");

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In reply to Re^5: make_path for creating directory tree by james28909
in thread make_path for creating directory tree by fasoli

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