I have a working installation of apache tomcat, except I downloaded a webapp that is causing some kind of problem when I restart tomcat. (I think it's choking on a malconfigured jdbc file, but that's beside the point.)

So the startup is failing, but only AFTER it opens 8080 for listening. Of course the shutdown is failing also, because there is no process to shutdown, so 8080 never closes and tomcat will never start again regardless because its port is already taken.

My only workaround is to reboot, because I don't have tomcat configured on startup yet. But this is annoying and I'd just like to force that port closed.

Everything I find so far is just people telling me to turn off my startup services...duh that doesn't help me.

Is there a command to directly close a port when you know there's no daemon behind it?

slack 12

Use lsof to find the process that is holding the port open, then kill it.

I have Fedora 9 and I'm not finding lsof. Any suggestions?

[QUOTE=scotthill;3395210]I have Fedora 9 and I'm not finding lsof. Any suggestions?

Nevermind, I found it.

Does
reveal the PID?

If so, you can just kill the PID IF it has it there.

I only offer this because sometimes lsof won't reveal a listening port, at least that's been my experience.