.htaccess Extensionless URLs

I'm wondering if there's any code out there that will do one, or preferably, all of the following:

1) Rewrite all urls such as www.mysite.com/page.html to www.mysite.com/page
2) Add a www. to all URLs such as mysite.com to www.mysite.com

Thanks

 

too redirect all non www to www use the below code

Options +FollowSymlinks
RewriteEngine on
rewritecond %{http_host} ^mydomain.com [nc]
rewriterule ^(.*)$ http://www.mydomain.com/$1 [r=301,nc]

REPLACE mydomain.com and www.mydomain.com with your actual domain name.