As I see it with Net::Ping you'd still
be forced to run it as su
(unless you run echo service from (x)inetd).
It's all in the documentation...
Also, Net::Ping doesn't provide the same kind of output as system
ping, unless you want to twiddle with timers and timeouts.
I'd say that it would be neater here
to use "open(|/sbin/ping <opts>)".
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