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 on it, and now someone has to change it to about 10K or so, and the function does not decrease).