linux-cmd命令集

lsof

- list open files 列出打开的文件

-i: selects the listing of files any  of  whose  Internet  address
            matches  the  address specified in i.  If no address is speci-
            fied, this option selects the listing of all Internet and x.25
            (HP-UX) network files 

3000端口被占用:

 {
  code: 'EADDRINUSE',
  errno: 'EADDRINUSE',
  syscall: 'listen',
  address: '::',
  port: 3000
}

解决方案：

softwaredeMacBook-Pro:serv software$ lsof -i:3000
COMMAND   PID     USER   FD   TYPE             DEVICE SIZE/OFF NODE NAME
node    23353 software   32u  IPv6 0x5acd86b90827ce57      0t0  TCP *:hbci (LISTEN)
node    23353 software   43u  IPv6 0x5acd86b90827bd17      0t0  TCP localhost:hbci->localhost:56421 (CLOSE_WAIT)
softwaredeMacBook-Pro:serv software$ kill 23353
softwaredeMacBook-Pro:serv software$ lsof -i:3000