This won't do what you want, whether it compiles or not.:

  open($file or die "can not open .txt file: $!") ;

This line appears to have changed from the original node:

foreach $file (@files) {

That will not work under strict unless you've added a my $file somewhere above that. Try not to hand-copy the code. Using copy and paste is much more accurate.

In reply to Re^7: Use of uninitialized value in string eq by mr_mischief
in thread Use of uninitialized value in string eq by Anonymous Monk

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