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  1. or download this
     
    my @res = `ping -c 3 $ip`;
     if (pop @res =~ /(\d+\.\d+)\/(\d+\.\d+)\/(\d+\.\d+))
    ...
    my @sorted = sort ($1,$2,$3);
    print pop @sorted
    }
    
  2. or download this
    print(((sort(((`ping -c3 $ip`)[-1])=~/(\d+\.\d+)\/(\d+\.\d+)\/(\d+\.\d
    ++)/))[-1])
    )