Question

I have a domain on which I run a personal file hosting service for my clients. Recently I had to use the domain to host a site and move the service to a subdomain. However I would like to preserve the 1000’s of links I’ve created.

I was thinking of doing it with htaccess and writing a rule like this although I am hardly even a newbie when it comes to Regex strings :

RewriteEngine on
RewriteBase / 

RedirectMatch 301 ^/[regex]$ http://subdomain.website.com/$1

Where [regex] would somehow detect that the string is a 12 character encoded string. Ex :

0G0C2V251p2t
2f243p3T0D34

Answer 1

Using mod_alias:

RedirectMatch 301 ^/([A-Za-z0-9]{12}([A-Za-z0-9]{8})?)$ http://subdomain.website.com/$1

Using mod_rewrite:

RewriteEngine On
RewriteRule ^/?([A-Za-z0-9]{12}([A-Za-z0-9]{8})?)$ http://subdomain.website.com/$1 [L,R=301]