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  1. or download this
    $uptime=`cat /proc/uptime`;
print ref(\$uptime)," $uptime\n";
$uptime*=1;
print ref(\$uptime)," $uptime\n";
  2. or download this
    SCALAR 12844.72 24452.05

SCALAR 12844.72
  3. or download this
    $uptime=`cat /proc/uptime`;
print ref(\$uptime)," $uptime\n";
$uptime*=2;
print ref(\$uptime)," $uptime\n";
  4. or download this
    SCALAR 12956.65 24667.72

SCALAR 25913.3