netstat -aon | findstr :9000
TCP 127.0.0.1:9000 0.0.0.0:0 LISTENING 1234
tasklist | findstr 1234
perl.exe 1234 Console 1 12,345 K
taskkill /PID 1234 /F
taskkill /IM perl.exe /F
Stop-Process -Id 1234 -Force
Stop-Process -Name perl -Force