diff --git a/README.md b/README.md
index 9cb364c..0ee67ce 100644
--- a/README.md
+++ b/README.md
@@ -19,7 +19,6 @@
 - 默认将管理面板仅绑定到本机（`127.0.0.1:9090`），如需对外访问请在`.env`中自行配置并确保`CLASH_SECRET`足够复杂。
 - 默认开启 TLS 证书校验，若确需跳过校验请在`.env`中设置`ALLOW_INSECURE_TLS=true`（不推荐）。
 - 如从旧版本升级，若存在 `/etc/profile.d/clash.sh` 请按需清理或改用新的 `/etc/profile.d/clash-for-linux.sh`。
-
 - 当前在RHEL系列和Debian系列Linux系统中测试过，其他系列可能需要适当修改脚本。
 - 支持 x86_64/aarch64 平台
 
@@ -117,6 +116,20 @@ https_proxy=http://127.0.0.1:7890
 > **注意：**
 > 重启脚本 `restart.sh` 不会更新订阅信息。
 
+如需更新订阅并重启，可执行：
+
+```bash
+$ sudo bash restart.sh --update
+```
+
+## 更新订阅
+
+如只需更新订阅配置但不重启服务，可执行：
+
+```bash
+$ sudo bash update.sh
+```
+
 <br>
 
 ## 停止程序
@@ -142,6 +155,30 @@ $ proxy_off
 
 然后检查程序端口、进程以及环境变量`http_proxy|https_proxy`，若都没则说明服务正常关闭。
 
+<br>
+
+## systemd 服务
+
+将仓库中的 `systemd/clash-for-linux.service` 复制到 `/etc/systemd/system/`，并根据实际路径修改 `WorkingDirectory` 与脚本路径：
+
+```bash
+$ sudo cp systemd/clash-for-linux.service /etc/systemd/system/
+$ sudo vim /etc/systemd/system/clash-for-linux.service
+```
+
+启用并启动服务：
+
+```bash
+$ sudo systemctl daemon-reload
+$ sudo systemctl enable --now clash-for-linux.service
+```
+
+停止服务：
+
+```bash
+$ sudo systemctl stop clash-for-linux.service
+```
+
 
 <br>
 
diff --git a/restart.sh b/restart.sh
index 191ad4a..31f33b0 100644
--- a/restart.sh
+++ b/restart.sh
@@ -40,26 +40,52 @@ if_success() {
 Server_Dir=$(cd $(dirname "${BASH_SOURCE[0]}") && pwd)
 Conf_Dir="$Server_Dir/conf"
 Log_Dir="$Server_Dir/logs"
+Temp_Dir="$Server_Dir/temp"
+PID_FILE="$Temp_Dir/clash.pid"
+
+if [ "$1" = "--update" ]; then
+	bash "$Server_Dir/update.sh" || exit 1
+fi
 
 ## 关闭clash服务
 Text1="服务关闭成功！"
 Text2="服务关闭失败！"
 # 查询并关闭程序进程
-PIDS=$(pgrep -f "clash-linux-")
-if [ -n "$PIDS" ]; then
-	kill $PIDS
-	ReturnStatus=$?
-	for i in {1..5}; do
-		sleep 1
-		if ! pgrep -f "clash-linux-" >/dev/null; then
-			break
+if [ -f "$PID_FILE" ]; then
+	PID=$(cat "$PID_FILE")
+	if [ -n "$PID" ]; then
+		kill "$PID"
+		ReturnStatus=$?
+		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
-	done
-	if pgrep -f "clash-linux-" >/dev/null; then
-		kill -9 $PIDS
+	else
+		ReturnStatus=1
 	fi
+	rm -f "$PID_FILE"
 else
-	ReturnStatus=0
+	PIDS=$(pgrep -f "clash-linux-")
+	if [ -n "$PIDS" ]; then
+		kill $PIDS
+		ReturnStatus=$?
+		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
+	else
+		ReturnStatus=0
+	fi
 fi
 if_success $Text1 $Text2 $ReturnStatus
 
@@ -82,15 +108,27 @@ Text5="服务启动成功！"
 Text6="服务启动失败！"
 if [[ $CpuArch =~ "x86_64" ]]; then
 	nohup $Server_Dir/bin/clash-linux-amd64 -d $Conf_Dir &> $Log_Dir/clash.log &
+	PID=$!
 	ReturnStatus=$?
+	if [ $ReturnStatus -eq 0 ]; then
+		echo "$PID" > "$PID_FILE"
+	fi
 	if_success $Text5 $Text6 $ReturnStatus
 elif [[ $CpuArch =~ "aarch64" ||  $CpuArch =~ "arm64" ]]; then
 	nohup $Server_Dir/bin/clash-linux-arm64 -d $Conf_Dir &> $Log_Dir/clash.log &
+	PID=$!
 	ReturnStatus=$?
+	if [ $ReturnStatus -eq 0 ]; then
+		echo "$PID" > "$PID_FILE"
+	fi
 	if_success $Text5 $Text6 $ReturnStatus
 elif [[ $CpuArch =~ "armv7" ]]; then
 	nohup $Server_Dir/bin/clash-linux-armv7 -d $Conf_Dir &> $Log_Dir/clash.log &
+	PID=$!
 	ReturnStatus=$?
+	if [ $ReturnStatus -eq 0 ]; then
+		echo "$PID" > "$PID_FILE"
+	fi
 	if_success $Text5 $Text6 $ReturnStatus
 else
 	echo -e "\033[31m\n[ERROR] Unsupported CPU Architecture！\033[0m"
diff --git a/shutdown.sh b/shutdown.sh
index e9b6184..535cf18 100644
--- a/shutdown.sh
+++ b/shutdown.sh
@@ -1,17 +1,37 @@
 #!/bin/bash
 
 # 关闭clash服务
-PIDS=$(pgrep -f "clash-linux-")
-if [ -n "$PIDS" ]; then
-	kill $PIDS
-	for i in {1..5}; do
-		sleep 1
-		if ! pgrep -f "clash-linux-" >/dev/null; then
-			break
+Server_Dir=$(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
-	done
-	if pgrep -f "clash-linux-" >/dev/null; then
-		kill -9 $PIDS
 	fi
 fi
 
diff --git a/start.sh b/start.sh
index 667a546..4d84485 100644
--- a/start.sh
+++ b/start.sh
@@ -23,6 +23,7 @@ chmod +x $Server_Dir/tools/subconverter/subconverter
 Conf_Dir="$Server_Dir/conf"
 Temp_Dir="$Server_Dir/temp"
 Log_Dir="$Server_Dir/logs"
+PID_FILE="$Temp_Dir/clash.pid"
 
 # 将 CLASH_URL 变量的值赋给 URL 变量，并检查 CLASH_URL 是否为空
 URL=${CLASH_URL:?Error: CLASH_URL variable is not set or empty}
@@ -173,11 +174,13 @@ if_success $Text3 $Text4 $ReturnStatus
 \cp -a $Temp_Dir/clash.yaml $Temp_Dir/clash_config.yaml
 
 
-## 判断订阅内容是否符合clash配置文件标准，尝试转换（当前不支持对 x86_64 以外的CPU架构服务器进行clash配置文件检测和转换，此功能将在后续添加）
-if [[ $CpuArch =~ "x86_64" || $CpuArch =~ "amd64"  ]]; then
+## 判断订阅内容是否符合clash配置文件标准，尝试转换（需 subconverter 可执行文件支持）
+if [ -x "$Server_Dir/tools/subconverter/subconverter" ]; then
 	echo -e '\n判断订阅内容是否符合clash配置文件标准:'
 	bash $Server_Dir/scripts/clash_profile_conversion.sh
 	sleep 3
+else
+	echo -e "\033[33m[WARN] 未检测到可用的 subconverter，跳过订阅转换\033[0m"
 fi
 
 
@@ -222,15 +225,27 @@ Text5="服务启动成功！"
 Text6="服务启动失败！"
 if [[ $CpuArch =~ "x86_64" || $CpuArch =~ "amd64"  ]]; then
 	nohup $Server_Dir/bin/clash-linux-amd64 -d $Conf_Dir &> $Log_Dir/clash.log &
+	PID=$!
 	ReturnStatus=$?
+	if [ $ReturnStatus -eq 0 ]; then
+		echo "$PID" > "$PID_FILE"
+	fi
 	if_success $Text5 $Text6 $ReturnStatus
 elif [[ $CpuArch =~ "aarch64" ||  $CpuArch =~ "arm64" ]]; then
 	nohup $Server_Dir/bin/clash-linux-arm64 -d $Conf_Dir &> $Log_Dir/clash.log &
+	PID=$!
 	ReturnStatus=$?
+	if [ $ReturnStatus -eq 0 ]; then
+		echo "$PID" > "$PID_FILE"
+	fi
 	if_success $Text5 $Text6 $ReturnStatus
 elif [[ $CpuArch =~ "armv7" ]]; then
 	nohup $Server_Dir/bin/clash-linux-armv7 -d $Conf_Dir &> $Log_Dir/clash.log &
+	PID=$!
 	ReturnStatus=$?
+	if [ $ReturnStatus -eq 0 ]; then
+		echo "$PID" > "$PID_FILE"
+	fi
 	if_success $Text5 $Text6 $ReturnStatus
 else
 	echo -e "\033[31m\n[ERROR] Unsupported CPU Architecture！\033[0m"
diff --git a/systemd/clash-for-linux.service b/systemd/clash-for-linux.service
new file mode 100644
index 0000000..5589ec3
--- /dev/null
+++ b/systemd/clash-for-linux.service
@@ -0,0 +1,16 @@
+[Unit]
+Description=Clash for Linux
+After=network.target
+
+[Service]
+Type=simple
+WorkingDirectory=/opt/clash-for-linux
+ExecStart=/bin/bash /opt/clash-for-linux/start.sh
+ExecStop=/bin/bash /opt/clash-for-linux/shutdown.sh
+Restart=on-failure
+RestartSec=5
+User=root
+PIDFile=/opt/clash-for-linux/temp/clash.pid
+
+[Install]
+WantedBy=multi-user.target
diff --git a/update.sh b/update.sh
new file mode 100644
index 0000000..df7a044
--- /dev/null
+++ b/update.sh
@@ -0,0 +1,195 @@
+#!/bin/bash
+
+#################### 脚本初始化任务 ####################
+
+# 获取脚本工作目录绝对路径
+export Server_Dir=$(cd $(dirname "${BASH_SOURCE[0]}") && pwd)
+
+# 加载.env变量文件
+source $Server_Dir/.env
+
+#################### 变量设置 ####################
+
+Conf_Dir="$Server_Dir/conf"
+Temp_Dir="$Server_Dir/temp"
+Log_Dir="$Server_Dir/logs"
+
+# 将 CLASH_URL 变量的值赋给 URL 变量，并检查 CLASH_URL 是否为空
+URL=${CLASH_URL:?Error: CLASH_URL variable is not set or empty}
+
+# 获取 CLASH_SECRET 值，若未设置则尝试读取旧配置，否则生成随机数
+Secret=${CLASH_SECRET:-}
+if [ -z "$Secret" ] && [ -f "$Conf_Dir/config.yaml" ]; then
+	Secret=$(awk -F': ' '/^secret:/{print $2; exit}' "$Conf_Dir/config.yaml")
+fi
+if [ -z "$Secret" ]; then
+	Secret=$(openssl rand -hex 32)
+fi
+
+# 设置默认值
+CLASH_HTTP_PORT=${CLASH_HTTP_PORT:-7890}
+CLASH_SOCKS_PORT=${CLASH_SOCKS_PORT:-7891}
+CLASH_REDIR_PORT=${CLASH_REDIR_PORT:-7892}
+CLASH_LISTEN_IP=${CLASH_LISTEN_IP:-0.0.0.0}
+CLASH_ALLOW_LAN=${CLASH_ALLOW_LAN:-false}
+EXTERNAL_CONTROLLER_ENABLED=${EXTERNAL_CONTROLLER_ENABLED:-true}
+EXTERNAL_CONTROLLER=${EXTERNAL_CONTROLLER:-127.0.0.1:9090}
+ALLOW_INSECURE_TLS=${ALLOW_INSECURE_TLS:-false}
+
+#################### 函数定义 ####################
+
+# 自定义action函数，实现通用action功能
+success() {
+	echo -en "\\033[60G[\\033[1;32m  OK  \\033[0;39m]\r"
+	return 0
+}
+
+failure() {
+	local rc=$?
+	echo -en "\\033[60G[\\033[1;31mFAILED\\033[0;39m]\r"
+	[ -x /bin/plymouth ] && /bin/plymouth --details
+	return $rc
+}
+
+action() {
+	local STRING rc
+
+	STRING=$1
+	echo -n "$STRING "
+	shift
+	"$@" && success $"$STRING" || failure $"$STRING"
+	rc=$?
+	echo
+	return $rc
+}
+
+# 判断命令是否正常执行 函数
+if_success() {
+	local ReturnStatus=$3
+	if [ $ReturnStatus -eq 0 ]; then
+		action "$1" /bin/true
+	else
+		action "$2" /bin/false
+		exit 1
+	fi
+}
+
+#################### 任务执行 ####################
+
+## 临时取消环境变量
+unset http_proxy
+unset https_proxy
+unset no_proxy
+unset HTTP_PROXY
+unset HTTPS_PROXY
+unset NO_PROXY
+
+## Clash 订阅地址检测及配置文件下载
+echo -e '\n正在检测订阅地址...'
+Text1="Clash订阅地址可访问！"
+Text2="Clash订阅地址不可访问！"
+
+# 构建检测 curl 命令，添加自定义请求头
+CHECK_CMD=(curl -o /dev/null -L -sS --retry 5 -m 10 --connect-timeout 10 -w "%{http_code}")
+if [ "$ALLOW_INSECURE_TLS" = "true" ]; then
+	CHECK_CMD+=(-k)
+	echo -e "\033[33m[WARN] 已启用不安全的 TLS 下载（跳过证书校验）\033[0m"
+fi
+if [ -n "$CLASH_HEADERS" ]; then
+	CHECK_CMD+=(-H "$CLASH_HEADERS")
+fi
+CHECK_CMD+=("$URL")
+
+# 检查订阅地址
+status_code=$("${CHECK_CMD[@]}")
+echo "$status_code" | grep -E '^[23][0-9]{2}$' &>/dev/null
+ReturnStatus=$?
+if_success $Text1 $Text2 $ReturnStatus
+
+# 拉取更新config.yml文件
+echo -e '\n正在下载Clash配置文件...'
+Text3="配置文件config.yaml下载成功！"
+Text4="配置文件config.yaml下载失败，退出更新！"
+
+# 构建 curl 命令，添加自定义请求头
+CURL_CMD=(curl -L -sS --retry 5 -m 10 -o "$Temp_Dir/clash.yaml")
+if [ "$ALLOW_INSECURE_TLS" = "true" ]; then
+	CURL_CMD+=(-k)
+fi
+if [ -n "$CLASH_HEADERS" ]; then
+	CURL_CMD+=(-H "$CLASH_HEADERS")
+fi
+CURL_CMD+=("$URL")
+
+# 尝试使用curl进行下载
+"${CURL_CMD[@]}"
+ReturnStatus=$?
+if [ $ReturnStatus -ne 0 ]; then
+	# 如果使用curl下载失败，尝试使用wget进行下载
+	WGET_CMD=(wget -q -O "$Temp_Dir/clash.yaml")
+	if [ "$ALLOW_INSECURE_TLS" = "true" ]; then
+		WGET_CMD+=(--no-check-certificate)
+	fi
+	if [ -n "$CLASH_HEADERS" ]; then
+		WGET_CMD+=(--header="$CLASH_HEADERS")
+	fi
+	WGET_CMD+=("$URL")
+	
+	for i in {1..10}
+	do
+		"${WGET_CMD[@]}"
+		ReturnStatus=$?
+		if [ $ReturnStatus -eq 0 ]; then
+			break
+		else
+			continue
+		fi
+	done
+fi
+if_success $Text3 $Text4 $ReturnStatus
+
+# 重命名clash配置文件
+\cp -a $Temp_Dir/clash.yaml $Temp_Dir/clash_config.yaml
+
+## 判断订阅内容是否符合clash配置文件标准，尝试转换（需 subconverter 可执行文件支持）
+if [ -x "$Server_Dir/tools/subconverter/subconverter" ]; then
+	echo -e '\n判断订阅内容是否符合clash配置文件标准:'
+	bash $Server_Dir/scripts/clash_profile_conversion.sh
+	sleep 3
+else
+	echo -e "\033[33m[WARN] 未检测到可用的 subconverter，跳过订阅转换\033[0m"
+fi
+
+## Clash 配置文件重新格式化及配置
+sed -n '/^proxies:/,$p' $Temp_Dir/clash_config.yaml > $Temp_Dir/proxy.txt
+
+# 合并形成新的config.yaml，并替换配置占位符
+cat $Temp_Dir/templete_config.yaml > $Temp_Dir/config.yaml
+cat $Temp_Dir/proxy.txt >> $Temp_Dir/config.yaml
+
+# 替换配置文件中的占位符为环境变量值
+sed -i "s/CLASH_HTTP_PORT_PLACEHOLDER/${CLASH_HTTP_PORT}/g" $Temp_Dir/config.yaml
+sed -i "s/CLASH_SOCKS_PORT_PLACEHOLDER/${CLASH_SOCKS_PORT}/g" $Temp_Dir/config.yaml
+sed -i "s/CLASH_REDIR_PORT_PLACEHOLDER/${CLASH_REDIR_PORT}/g" $Temp_Dir/config.yaml
+sed -i "s/CLASH_LISTEN_IP_PLACEHOLDER/${CLASH_LISTEN_IP}/g" $Temp_Dir/config.yaml
+sed -i "s/CLASH_ALLOW_LAN_PLACEHOLDER/${CLASH_ALLOW_LAN}/g" $Temp_Dir/config.yaml
+
+# 配置 external-controller
+if [ "$EXTERNAL_CONTROLLER_ENABLED" = "true" ]; then
+	sed -i "s/EXTERNAL_CONTROLLER_PLACEHOLDER/${EXTERNAL_CONTROLLER}/g" $Temp_Dir/config.yaml
+else
+	# 如果禁用 external-controller，则注释掉该行
+	sed -i "s/external-controller: 'EXTERNAL_CONTROLLER_PLACEHOLDER'/# external-controller: disabled/g" $Temp_Dir/config.yaml
+fi
+
+\cp $Temp_Dir/config.yaml $Conf_Dir/
+
+# Configure Clash Dashboard
+Work_Dir=$(cd $(dirname $0); pwd)
+Dashboard_Dir="${Work_Dir}/dashboard/public"
+if [ "$EXTERNAL_CONTROLLER_ENABLED" = "true" ]; then
+	sed -ri "s@^# external-ui:.*@external-ui: ${Dashboard_Dir}@g" $Conf_Dir/config.yaml
+fi
+sed -r -i '/^secret: /s@(secret: ).*@\1'${Secret}'@g' $Conf_Dir/config.yaml
+
+echo -e "\n订阅更新完成，如需生效请执行: bash restart.sh\n"