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analysis tool for statistics about active connections, open sockets, routing tables; in general the networking subsystem.

24
votes
If your application supports it, you can try passing port 0 to the application. If your application passes this to the kernel, the port will be dynamically allocated at request time, and is guaranteed …
answered Nov 16 '12 by Chris Down
469
votes
: $ sudo netstat -nlp | grep :80 tcp 0 0 0.0.0.0:80 0.0.0.0:* LISTEN 125004/nginx You can also use lsof: $ sudo lsof -n -i :80 | grep LISTEN nginx 125004 nginx 3u IPv4 6645 0t0 TCP 0.0.0.0:80 (LISTEN) …
answered Dec 25 '13 by Chris Down