how to know services running at which port number?

deeparo · 04-02-2007, 03:22 AM

I want to the entire services running on my system along with the port number on which it is running. Used netstat -a but could not figure out the port number associated with each service.

kstan · 04-02-2007, 03:58 AM

netstat -nltp

deeparo · 04-03-2007, 01:29 AM

How to release a port number from particular service. Problem text is
Service is dead but the particular port number on which it was
running is no released so if i try to run the service again it says
couldn't open udp:162 -- errno 98 ("Address already in use")

igorc · 04-03-2007, 02:53 AM

# netstat -ane | egrep ".162|Proto" -> take the value from User column (let say 29)
# ps -u 29 -> grab the PID for the process (let say 1234)
# kill -9 1234 -> kill the process that keeps that port open

-OR-

# /usr/sbin/lsof -i @localhost:162 -> grab the PID for the process (let say 1234)
# kill -9 1234