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  1. or download this
    s/^\s+|\s+$//g grep {defined $_} for ( $ipaddress, $prefix, $interface, $device, $locati;
  2. or download this
    s/^\s+|\s+$//g for grep {defined $_} ( $ipaddress, $prefix, $interface, $device, $location);
  3. or download this
    my @result = map {s/^\s+|\s+$//g; $_}  grep {defined $_} ( $ipaddress, $prefix, $interface, $device, $location);
  4. or download this
    map {s/^\s+|\s+$//g; $_}  grep {defined $_} ( $ipaddress, $prefix, $interface, $device, $location);