topic Re: lsof in Operating System - HP-UX

lsof

pgorn — Fri, 11 May 2007 18:23:11 GMT

How can you tell what ports are available to use. does it say LISTEN or what?
Please help fist time using lsof
thanks

Re: lsof

A. Clay Stephenson — Fri, 11 May 2007 18:57:17 GMT

Essentially, whatever ports lsof, netstat, et al do not list are available --- at that moment.

If this is a serious application then the developer should request a port registration from IANA.

Here is a reference to port assignments so typically the idea is to choose an unused port number -- and then make sure using netstat and lsof that the port is indeed unused on your system.

http://www.iana.org/assignments/port-numbers

Re: lsof

Ivan Ferreira — Fri, 11 May 2007 19:36:24 GMT

The ports in LISTEN state are currently in use, you can check with:

netstat -an |grep LISTEN

You can check /etc/services for a list or good known ports that are "reserved" for services. You should use a different port.

Re: lsof

pgorn — Fri, 11 May 2007 20:38:16 GMT

Thanks for your response. The app is Tuxedo and I got it fixed

Re: lsof

pgorn — Fri, 11 May 2007 20:40:05 GMT

The problem is fixed
Thank you