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open(F0, $ARGV[0]); open(F1, $ARGV[1]); open(F2, ">$ARGV[2]");
$line_no=$line_stop=0;
...

}
close F0; close F1; close F2;

1.0.129.197
1.0.131.49
...
1.0.138.143
1.0.138.154
1.0.139.72

3        PORT    state    protocol
3        80/tcp   closed http
...
5        80/tcp   open     http
5        443/tcp  filtered https
5        8080/tcp filtered http-proxy