open $fh, '>', "/tmp/blah" or die "File Open Problem: $!";

Whenever you die because of some error, always include both, the reason and the filename! This makes the error diagnosis and remedy much much faster in my experience:

open $fh, '>', "/tmp/blah" or die "File Open Problem with '/tmp/blah':
+ $!";

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In reply to Re^2: file writing permission by Corion
in thread file writing permission by Anonymous Monk

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