There are two ways to enable Apache file and directory indexing –
I) Using Apache config file –
1. You can add directory options in the Apache configuration file directly.
httpd.conf is an Apache config file, or you can add it in /etc/apache2/apache2.conf:
# vi /etc/apache2/apache2.conf
<Directory /var/www/example.com/folder>
Options Indexes FollowSymLinks
</Directory>
2. Once you add the code mentioned above, save and close the file.
3. Restart the httpd service.
# /etc/init.d/httpd restart
II) Using .htaccess Files with Apache
If you have .htaccess enabled, you can put a config line options index in your .htaccess file.
1. Open your .htaccess file.
# vi .htaccess
2. Add the following Apache directive –
Options Indexes
DirectoryIndex index.php index.html /example.php
3. Save and close your .htaccess file.