Linux查看进程id，以及根据进程id查看占用的端口，根据端口号查看占用的进程

应该是转载了别人的。

1. 先根据进程名查看进程id
ps aux | grep 进程名(或者ps -ef | grep 进程名)

y@ubuntu:~$ ps aux | grep bitcoind
y 2708 101 12.1 1611172 488580 ? Ssl Aug22 32:04 bitcoind -daemon -connect=172.16.247.139
y 3564 0.0 0.0 21536 1092 pts/0 S+ 00:23 0:00 grep --color=auto bitcoind
可以看到，bitcoind进程的pid是2708

2.通过进程id查看占用的端口
netstat -nap | grep 进程id

y@ubuntu:~$ netstat -nap | grep 2708
(Not all processes could be identified, non-owned process info
will not be shown, you would have to be root to see it all.)
tcp 0 0 127.0.0.1:8332 0.0.0.0:* LISTEN 2708/bitcoind
tcp6 0 0 ::1:8332 :::* LISTEN 2708/bitcoind
可以看到，pid=2708的进程占用的端口号是8332

3.通过端口号查看占用的进程id
netstat -nap | grep 端口号

y@ubuntu:~$ netstat -nap | grep 8332
(Not all processes could be identified, non-owned process info
will not be shown, you would have to be root to see it all.)
tcp 0 0 127.0.0.1:8332 0.0.0.0:* LISTEN 2708/bitcoind
tcp6 0 0 ::1:8332 :::* LISTEN 2708/bitcoind
可以看到，占用8332端口的是进程的pid是2708，名称是bitcoind