armbian上安装frpc并自启动
手动安装很简单，下载frpc的安装包，解压出来，将frpc二进制放到/usr/local/bin/目录下，设置可执行权限0755，将frpc.ini文件放到/usr/local/etc/目录下，然后将以下内容存为frpc.service文件，放到/etc/systemd/system/目录里。
[Unit]
Description=frpc
After=network-online.target
Wants=network-online.target
[Service]
Type=simple
User=nobody
ExecStart=/usr/local/bin/frpc -c /usr/local/etc/frpc.ini
Restart=always
[Install]
WantedBy=multi-user.target
运行：systemctl start frpc.service
停止运行：systemctl stop frpc.service
开机启动：systemctl enable frpc.service
取消开机启动：systemctl disable frpc.service
查看运行状态：systemctl status frpc.service
