: How do I select a different start/default page per domain? I have an apache2 installation on www.main_domain.com (invalid underscore in domain name is intentional; this is an example), and the

@Sims2060225

I can't think of any reason why one would want this sort of setup, but to make the best of a bad situation, I would give the sites different docroots to avoid unnecessary duplication of content/URLs and make the sites more maintainable, e.g.:

/var/www/site1
/var/www/site2
/var/www/site3


To share assets, you ought to just keep the assets in the main site's docroot and use mod_rewrite to 301 redirect from the other domains. This will allow you to use a single folder to keep shared assets, prevent duplicate URLs, and allow visitors to share cached files between sites.

In case you want to give a specific site its own version of a particular file, you just need to upload it to the respective path in its docroot, and visitors to that domain will see that version while still sharing all other assets.

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@Hamaas447

You could use a scripting language to detect the url that was entered and have the index page (index.php for example) load index.html, subdomain1.html or subdomain2.html based on the sub-domain detected. For Example index.php would be:

<?php
if($_SERVER['HTTP_HOST'] == 'www.sub_domain_1.com') { include('subdomain1.html'); }
else if($_SERVER['HTTP_HOST'] == 'www.sub_domain_2.com') { include('subdomain2.html'); }
else { include('index.html'); }
?>

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