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  1. or download this
    
use strict;
...

close $INFILE
    or die "Couldn't close $fname: $!";
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    use strict;
use warnings;
...
    or die "Couldn't close $fname: $!";
  3. or download this
    
use strict;
...

close $INFILE
    or die "Couldn't close $fname: $!";