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  1. or download this
        my $cmd = "$ping $_ 2> /dev/null";
    print "Debug:  command is '$cmd'\n";
    my $ping_out = `$cmd`;
  2. or download this
    Debug:  command is '/bin/ping myserver02 2> /dev/null'
  3. or download this
        my $ping_out = `$cmd`;
    chomp ($ping_out);
    print "Debug:  ping results => '$ping_out'\n";