我已经跟随这个网站http://raspberrypihelp.net/tutorials/24-raspberry-pi-webserver在我的树莓派上设置HTTP服务器nginx，并试图设置一个网站调用example.com。但当我运行sudo service nginx restart时，它说
正在重新启动nginx：在/etc/nginx/sites-enabled/ www.example.com中有未知的指令example.com:3
下面是example.com中的代码。

server {

    server_name example.com 192.168.1.88;

    access_log /srv/www/example.com/logs/access.log;

    error_log /srv/www/example.com/logs/error.log;

    root /srv/www/example.com/public/;

    location / {

        index index.php index.html index.htm;

        try_files $uri $uri/ /index.php?$args;

    }

    location ~ \.php$ {

        include /etc/nginx/fastcgi_params;

        fastcgi_pass unix:/var/run/php5-fpm.sock;

        fastcgi_index index.php;

        fastcgi_param SCRIPT_FILENAME /srv/www/example.com/public$fastcgi_script_name;

    }

    location /phpmyadmin {

        root /usr/share/;

        index index.php index.html index.htm;

        location ~ ^/phpmyadmin/(.+\.php)$ {

            try_files $uri =404;

            root /usr/share/;

            fastcgi_pass unix:/var/run/php5-fpm.sock;

            fastcgi_index index.php;

            fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name;

            include /etc/nginx/fastcgi_params;

        }

        location ~* ^/phpmyadmin/(.+\.(jpg|jpeg|gif|css|png|js|ico|html|xml|txt))$ {

            root /usr/share/;

        }

    }

    location /phpMyAdmin {

        rewrite ^/* /phpmyadmin last;

    }

}

我只是按照步骤操作，但它无法成功运行。