how kill the listen port in linux code example

Example 1: debian kill open port

fuser -k 3000/tcp 	//will kill that process.

Example 2: kill port

:8080.
C:\Users\psmith>netstat -ano|findstr "PID :8080"
Proto Local Address Foreign Address State PID
TCP 0.0.0.0:8081 0.0.0.0:0 LISTENING 18264

taskkill /pid 18264 /f