Find process associate with a Open Port

[Peter_APIIT]

Hello to all,

As you all know, netstat -an list down all open port but how to find out the open port associate with what process? Thanks.

[denta]

Lets say you have a process with pid 18487 like me

18487 ??  I<      0:00.24 ntpd: ntp engine (ntpd)

You can then see all its open files, including sockets and ports with

$ fstat -p 18487

If you only have a port number and want to find the pid, you can grep an fstat command

$ fstat | grep [port number]

[Peter_APIIT]

Thanks. The last command is what i looking for. Problem solved. Close thread.