topic Port (TCP) x Process in Operating System - HP-UX

Port (TCP) x Process

Kiko Azevedo — Tue, 16 Sep 2003 17:50:34 GMT

Hi

Is there a way to know to which process belong a particular port?

Example in port 32773-32779 are known to be for rpc services. But to which process

do they pertain to, that's another issue?

In linux the command is:

# netstat -anp (where "p" is process ID)

Thanks !!!

Marcus Vinicius de O. Azevedo

Re: Port (TCP) x Process

Anil C. Sedha — Tue, 16 Sep 2003 17:56:32 GMT

If you mean associating a port with a process id, you may use "lsof" to do that.

you can download it and use it.

lsof -i @hostname:port

for more options use lsof -h

Great utility to use.

Regards,
Anil

Re: Port (TCP) x Process

Jeff Schussele — Tue, 16 Sep 2003 17:57:49 GMT

Hi Marcus,

netstat will not give you that info.
Best way to get it is to use the lsof command.
It's a free 3rd party program & available here:

http://hpux.cs.utah.edu/hppd/hpux/Sysadmin/lsof-4.67/

It's a tool ALL SAs should have on all systems.

HTH,
Jeff

Re: Port (TCP) x Process

Sundar_7 — Tue, 16 Sep 2003 18:12:43 GMT

Hi,

There is no built in tool. You have to download lsof tool from the net to
achive this.

Once you download and install lsof command then you can use

# lsof -i:portnumber

to find out the processes using the port number

Thanks,

Sundar.