Files
clash-for-linux/scripts/install_systemd.sh

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#!/bin/bash
set -euo pipefail
#################### 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 [ "$(id -u)" -ne 0 ]; then
echo -e "\033[31m[ERROR] 需要 root 权限来安装 systemd 单元\033[0m"
exit 1
fi
#################### 用户 / 组 ####################
if ! getent group "$Service_Group" >/dev/null 2>&1; then
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"
fi
#################### 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 >"$Unit_Path"<<EOF
[Unit]
Description=Clash for Linux
After=network-online.target
Wants=network-online.target
[Service]
Type=simple
WorkingDirectory=$Server_Dir
# 启动 / 停止
ExecStart=/bin/bash $Server_Dir/start.sh
ExecStop=/bin/bash $Server_Dir/shutdown.sh
# 失败策略
Restart=on-failure
RestartSec=5
TimeoutStartSec=120
TimeoutStopSec=30
# 运行用户
User=$Service_User
Group=$Service_Group
# 环境变量
Environment=SYSTEMD_MODE=true
Environment=CLASH_ENV_FILE=$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"
echo -e "可执行以下命令启动服务:"
echo -e " sudo systemctl enable --now ${Service_Name}.service"