Update install_systemd.sh

scripts/install_systemd.sh

@@ -1,51 +1,90 @@
 #!/bin/bash
-
 set -euo pipefail
 
-Server_Dir=$(cd "$(dirname "${BASH_SOURCE[0]}")/.." && pwd)
+#################### 基本变量 ####################
+
+Server_Dir="$(cd "$(dirname "${BASH_SOURCE[0]}")/.." && pwd)"
 Service_Name="clash-for-linux"
+
 Service_User="${CLASH_SERVICE_USER:-clash}"
 Service_Group="${CLASH_SERVICE_GROUP:-$Service_User}"
+
 Unit_Path="/etc/systemd/system/${Service_Name}.service"
+PID_FILE="$Server_Dir/temp/clash.pid"
+
+#################### 权限检查 ####################
 
 if [ "$(id -u)" -ne 0 ]; then
-	echo -e "\033[31m[ERROR] 需要 root 权限来安装 systemd 单元\033[0m"
-	exit 1
+  echo -e "\033[31m[ERROR] 需要 root 权限来安装 systemd 单元\033[0m"
+  exit 1
 fi
 
+#################### 用户 / 组 ####################
+
 if ! getent group "$Service_Group" >/dev/null 2>&1; then
-	groupadd --system "$Service_Group"
+  groupadd --system "$Service_Group"
 fi
 
 if ! id "$Service_User" >/dev/null 2>&1; then
-	useradd --system --no-create-home --shell /usr/sbin/nologin --gid "$Service_Group" "$Service_User"
+  useradd \
+    --system \
+    --no-create-home \
+    --shell /usr/sbin/nologin \
+    --gid "$Service_Group" \
+    "$Service_User"
 fi
 
-install -d -m 0755 "$Server_Dir/conf" "$Server_Dir/logs" "$Server_Dir/temp"
-chown -R "$Service_User:$Service_Group" "$Server_Dir/conf" "$Server_Dir/logs" "$Server_Dir/temp"
+#################### 目录初始化 ####################
+
+install -d -m 0755 \
+  "$Server_Dir/conf" \
+  "$Server_Dir/logs" \
+  "$Server_Dir/temp"
+
+chown -R "$Service_User:$Service_Group" \
+  "$Server_Dir/conf" \
+  "$Server_Dir/logs" \
+  "$Server_Dir/temp"
+
+#################### 生成 systemd Unit ####################
 
 cat >"$Unit_Path"<<EOF
 [Unit]
 Description=Clash for Linux
 After=network.target
+Wants=network.target
 
 [Service]
-Type=simple
+Type=forking
 WorkingDirectory=$Server_Dir
+
+# 启动 / 停止
 ExecStart=/bin/bash $Server_Dir/start.sh
 ExecStop=/bin/bash $Server_Dir/shutdown.sh
+
+# PID 管理
+PIDFile=$PID_FILE
+
+# 失败策略
 Restart=on-failure
 RestartSec=5
+TimeoutStartSec=120
+TimeoutStopSec=30
+
+# 运行用户
 User=$Service_User
 Group=$Service_Group
-PIDFile=$Server_Dir/temp/clash.pid
-Environment=CLASH_ENV_FILE=$Server_Dir/temp/clash-for-linux.sh
+
+# 环境变量
 Environment=SYSTEMD_MODE=true
+Environment=CLASH_ENV_FILE=$Server_Dir/temp/clash-for-linux.sh
 
 [Install]
 WantedBy=multi-user.target
 EOF
 
+#################### 刷新 systemd ####################
+
 systemctl daemon-reload
 
 echo -e "\033[32m[OK] 已生成 systemd 单元: ${Unit_Path}\033[0m"