Systemd示例
``` [Unit] Description=alarm After=network.target nss-lookup.target Wants=network-online.target [Service] Type=simple User=root WorkingDirectory=/var/www/work_dir/ ExecStart=/var/www/work_dir/run_app Restart=always RestartSec=10 RestartPreventExitStatus=143 137 SIGTERM SIGKILL LimitNOFILE=65535 [Install] WantedBy=multi-user.target ``` https://www.ruanyifeng.com/blog/2016/03/systemd-tutorial-part-two.html