系统脚本可以放在/lib/systemd/system/下 ，管理员编写的脚本一般可放在/etc/systemd/system/下

[Unit]

Description=nginx 

After=network.target remote-fs.target nss-lookup.target

[Service]

Type=forking

PIDFile=/webdata/opt/local/tengine/logs/nginx.pid

ExecStart=/webdata/opt/local/tengine/sbin/nginx -c /webdata/opt/local/tengine/conf/nginx.conf

ExecReload=/bin/kill -s HUP $MAINPID

ExecStop=/bin/kill -s QUIT $MAINPID

PrivateTmp=true

[Install]

WantedBy=multi-user.target