Kill any server running on port 8080 lsof -i TCP:8080 | awk 'NR > 1 {print $2}' | xargs kill -9 or add to bash function killport() { echo "Killing processes on port $1" lsof -i TCP:$1 | awk 'NR > 1 {print $2}' | xargs kill -9 } and use as $ killport 8080