Port that a process opens up

Applications IP Networking
1

Hi all,

I have a process with PID as 12456. Could you please let me know how do i find out what is the port that process listens upon in Linux?

Thanks in Advance,

Pankajakshan

2

Check out the lsof command. You might need to run it as root.

3

you could use era's idea (lsof -p PID) or do something like netstat -putanuw|grep -E "LISTEN.*(processname|processpid)"

You should change "processname" and "processpid". You could also use just "LISTEN.*processname" or "LISTEN.*pid"