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Re: task and port number?



 On Tue, 18 Dec 2007, Scott Ehrlich wrote: 

> On a Linux system, if a program claims that a port is in use (say I want 
> to install a web server on port 80, but the web server claims port 80 is 
> already in use, and a ps auwx doesn't show/claim a web server is running), 
> is there a program that can tell me what application is using the port? 
> 
> netstat -a will show apps and their PIDs, then later what ports are open, 
> but no direct port <-> app mapping. 

"netstat -ap" should add the program name and pid. 

Personally I tend to use lsof instead. 

"lsof -n -i :80" should show you what process is bound to port 80 

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