```ruby
$ lsof -wni tcp:3000
COMMAND    PID   USER   FD   TYPE             DEVICE SIZE/OFF NODE NAME
Google     409 fndm40  156u  IPv4 0xf4f2b081d54b7cbf      0t0  TCP 127.0.0.1:61388->127.0.0.1:hbci (ESTABLISHED)
ruby      1091 fndm40   20u  IPv4 0xf4f2b081c673bcbf      0t0  TCP *:hbci (LISTEN)
ruby      1091 fndm40   26u  IPv4 0xf4f2b081d574ceaf      0t0  TCP 127.0.0.1:hbci->127.0.0.1:60305 (CLOSE_WAIT)
ruby      1091 fndm40   28u  IPv4 0xf4f2b081d48de3c7      0t0  TCP 127.0.0.1:hbci->127.0.0.1:61388 (ESTABLISHED)
```

```ruby
$ kill -9 1091
```


続きを読むには単価診断を受けてください（30秒）