网络工具中有“瑞士军刀”美誉的NetCat， 在我们用了N年了至今仍是爱不释手。因为它短小精悍（这个用在它身上很适合，现在有人已经将其修改成大约10K左右，而且功能不减少）。-Network tools in the "Swiss Army knife" reputation NetCat, we used the N years is still put it down. Because it is short and pithy (this is very suitable for use