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Try mkdir($dir) or die "Unable to create directory $dir: $!"; (obviously assigning $dir first).
$! should give you a clue.

If you're trying to create a hierarchy/tree of directories, you should look at File::Path's mkpath call.
File::Path is a standard module.

If you're not doing so already, Use strict warnings and diagnostics or die.


If the information in this post is inaccurate, or just plain wrong, don't just downvote - please post explaining what's wrong.
That way everyone learns.


In reply to Re: Directory creation failing by BazB
in thread Directory creation failing by Anonymous Monk

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