Question

I am working on creating Google style SEO rules with .htaccess and I am having problems with the final part.

If you type google.com/nexus into your browser you will be redirected to http://www.google.com/nexus/

It adds www as well as a trailing slash.

How can I achieve this with .htaccess?

#Start rewrite engine
RewriteEngine on
RewriteBase /

# Enforce www
# If you have subdomains, you can add them to 
# the list using the "|" (OR) regex operator
RewriteCond %{HTTP_HOST} !^(www|dev|d10|m)\.
RewriteCond %{HTTPS}s ^on(s)|
RewriteRule ^ http%1://www.%{HTTP_HOST}%{REQUEST_URI} [L,R=301]

# Hide the private directory by redirecting the request to index.php
RewriteRule ^(private|\.git) index.php/$1 [L]
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule ^(.*)$ index.php/$1 [QSA,L]

If you see any places to improve for speed / scalability that would be most appreciated.

My final solution:

RewriteEngine on
RewriteBase /        

# Enforce www
# If you have subdomains, you can add them to 
# the list using the "|" (OR) regex operator
RewriteCond %{HTTP_HOST} !^(www|dev|d10|m)\.    
RewriteCond %{HTTPS}s ^on(s)|
RewriteRule ^ http%1://www.%{HTTP_HOST}%{REQUEST_URI} [R=301,L]

# Add Trailing Slash
RewriteCond %{REQUEST_URI} !(\.[a-zA-Z0-9]{1,5}|/)$
RewriteRule (.*)$ /$1/ [R=301,L]


# Hide the private directory by redirecting the request to index.php
RewriteRule ^(private|\.git) index.php/$1 [L]
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule ^(.*)$ index.php/$1 [QSA,L]

Answer 1

RewriteCond %{REQUEST_URI} !(\.[a-zA-Z0-9]{1,5}|/)$
RewriteRule (.*)$ http://example.com/$1/ [R=301,L]

Replace example.com with your domain.