Add update flow, pidfile handling, and systemd unit

shutdown.sh

@@ -1,14 +1,41 @@
 #!/bin/bash
 
 # 关闭clash服务
-PID_NUM=`ps -ef | grep [c]lash-linux-a | wc -l`
-PID=`ps -ef | grep [c]lash-linux-a | awk '{print $2}'`
-if [ $PID_NUM -ne 0 ]; then
-	kill -9 $PID
-	# ps -ef | grep [c]lash-linux-a | awk '{print $2}' | xargs kill -9
+Server_Dir=$(cd $(dirname "${BASH_SOURCE[0]}") && pwd)
+Temp_Dir="$Server_Dir/temp"
+PID_FILE="$Temp_Dir/clash.pid"
+if [ -f "$PID_FILE" ]; then
+	PID=$(cat "$PID_FILE")
+	if [ -n "$PID" ]; then
+		kill "$PID"
+		for i in {1..5}; do
+			sleep 1
+			if ! kill -0 "$PID" 2>/dev/null; then
+				break
+			fi
+		done
+		if kill -0 "$PID" 2>/dev/null; then
+			kill -9 "$PID"
+		fi
+	fi
+	rm -f "$PID_FILE"
+else
+	PIDS=$(pgrep -f "clash-linux-")
+	if [ -n "$PIDS" ]; then
+		kill $PIDS
+		for i in {1..5}; do
+			sleep 1
+			if ! pgrep -f "clash-linux-" >/dev/null; then
+				break
+			fi
+		done
+		if pgrep -f "clash-linux-" >/dev/null; then
+			kill -9 $PIDS
+		fi
+	fi
 fi
 
 # 清除环境变量
-> /etc/profile.d/clash.sh
+> /etc/profile.d/clash-for-linux.sh
 
 echo -e "\n服务关闭成功，请执行以下命令关闭系统代理：proxy_off\n"