lsof

[pgorn]

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

[A. Clay Stephenson · Accepted solution]

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

[Ivan Ferreira]

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.

[pgorn]

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

[pgorn]

The problem is fixed
Thank you