sudo apt-get install apache2

/etc/apache2/apache2.conf

<Directory /var/www>
Options Indexes FollowSymLinks
AllowOverride None
Require all granted
</Directory>

<Directory /var/ota>
Options Indexes FollowSymLinks
AllowOverride None
Require all granted
</Directory>

etc/apache2/sites-available/000-default.conf

ServerAdmin webmaster@localhost
DocumentRoot /var/www

ServerAdmin webmaster@localhost
DocumentRoot /var/ota

sudo /etc/init.d/apache restart

mv /var/ota/index.html /var/ota/index.htmlbei

sudo chmod 777 /var/ota

http://jingyan.baidu.com/article/6d704a130c8a0d28da51ca5f.html