Maple

#!/usr/bin/env bash set -euo pipefail kill_port() { local port="$1" local pids pids="$(lsof -tiTCP:"${port}" -sTCP:LISTEN || true)" if [ -z "${pids}" ]; then echo "No process listening on port ${port}." return 0 fi echo "Stopping process(es) on port ${port}: ${pids}" kill ${pids} >/dev/null 2>&1 || true # Wait up to 2 seconds for graceful shutdown, then SIGKILL local waited=0 while [ "${waited}" -lt 4 ]; do sleep 0.5 waited=$(( waited + 1 )) pids="$(lsof -tiTCP:"${port}" -sTCP:LISTEN || true)" if [ -z "${pids}" ]; then echo "Port ${port} is free." return 0 fi done echo "Process(es) on port ${port} still running — sending SIGKILL: ${pids}" kill -9 ${pids} >/dev/null 2>&1 || true sleep 0.5 pids="$(lsof -tiTCP:"${port}" -sTCP:LISTEN || true)" if [ -z "${pids}" ]; then echo "Port ${port} is free." else echo "WARNING: port ${port} still in use after SIGKILL." fi } kill_port 3000 kill_port 8787 kill_port 19001 echo "" echo "All demo processes stopped."