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  1. or download this
    87 open (OUT, ">$filename");
  2. or download this
    87 open (OUT, ">$filename") or die "Couldn't create '$filename': $!";
  3. or download this
    my $backupoutput = 1;
...
my $backupoutput = 2; # you will get the warning here

print $backupoutput;