Useful mod_rewrite snippets

gistfile1.apacheconf

RewriteEngine on

# Redirect from anyhost to www
RewriteCond %{HTTP_HOST} !^www\.example\.com [NC]
RewriteCond %{HTTP_HOST} !^$
RewriteRule ^/?(.*) http://www.example.com/$1 [L,R,NE]

# Remove www from the request uri
RewriteCond %{HTTP_HOST} ^www\.
RewriteCond %{HTTPS}s ^on(s)|off
RewriteCond http%1://%{HTTP_HOST} ^(https?://)(www\.)?(.+)$
RewriteRule ^ %1%3%{REQUEST_URI} [R=301,L]

# Redirect a particular host to somewhere else
RewriteCond %{HTTP_HOST} ^([a-z.]+)?othersite\.com [NC]
RewriteRule ^/?(.*) http://www.example.com/dir [L,R,NE]