Re: Port-Numbers

J. Sean Connell (
Sat, 8 Mar 1997 22:03:48 +1300 (NZDT)

On Wed, 15 Jan 1997 wrote:

> Hi *,
> I know this is a little bit offtopic, but I don't have anyone else to ask!
> How can I get the PID of a process waiting for a connection on a
> specific port-number? I can see with 'netstat -a' that there is
> _someone_ sitting on it, but I can not see _who_!

I realize that this reply is about two months old, but I hope it's still of
some use to you.

The fuser program in the most recent psmisc package (psmisc-12 on my RH4.0
box) will let you do that, by using a command like:

fuser -n tcp 143
^^^ ^^^
| +---- port number
+-------- protocol (tcp, udp, etc.)


Jeffrey Connell            | Systems Adminstrator, ICONZ         | Any opinions stated above are not my employers',           | not my boyfriend's, my priest's, my God's, my
#include <stddisc.h>       | my friends', and probably not even my own.
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