topic Re: port useage hpux 11i in Operating System - HP-UX

port useage hpux 11i

Donald Thaler — Fri, 17 Mar 2006 11:20:47 GMT

i'm trying to find what application is using a specific port. I see references to a command 'lsof' but this command doesn't work on my hp ux11i box(pa risc 64). I tried the netstat -an|grep 3938 but that just told me it was in use.

Re: port useage hpux 11i

James A. Donovan — Fri, 17 Mar 2006 11:25:10 GMT

You can try downloading the source code for lsof and/or a copy of the pre-compiled binary from here:

http://ftp.cerias.purdue.edu/pub/tools/unix/sysutils/lsof/

Re: port useage hpux 11i

John Dvorchak — Fri, 17 Mar 2006 11:41:53 GMT

when you say "it doesn't work" do you mean you can't find it? You might try this link and download the binary, unzip it, and put in in your path like /usr/sbin or /usr/local/sbin.

http://ftp.br.xemacs.org/pub/unix-tools/lsof/binaries/hpux/

Re: port useage hpux 11i

Sandman! — Fri, 17 Mar 2006 12:31:48 GMT

Hi Donald,

netstat -an will give you the port usage also, however it could be listing a port on a remote system also. You need to be specific on your filtering criteria i.e.

# netstat -an | awk '{if(z[split($4,z,".")]==3938) print $0}'

...the awk construct splits $4 (Local Address) and compares the port no. to the last split-field. Or use lsof, downloading it from http://hpux.cs.utah.edu/, as:

# lsof -i:3938

the benefit of lsof is that it gives the process that's listening/bound to that port.

hope it helps!