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  1. or download this
    $result=`sudo ls -la`;
print "$result\n";
  2. or download this
        sudo: please use single character options
    usage: sudo -K | -L | -V | -h | -k | -l | -v
    usage: sudo [-HPSb] [-p prompt] [-u username|#uid]
                { -e file [...] | -i | -s | <command> }
  3. or download this
    $result=`sudo ls -la`;
print "$result\n";