You have forgotten your sigil on old_filename. I think the line should probably read

my ($old_filename, undef, $ext) = fileparse($file,qr{\..*});

I presume that would be line 23? Note that this would have been caught by strict and the resulting errors would have made the omission quite obvious.

In reply to Re: rename file extension by kennethk
in thread rename file extension by muizelaar

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