Force Urls with www. to without www. com htaccess

Question

I would like when typing in the URL http://www.meusite.com.br o. htaccess always redirects to http://meusite.com.br, need this 4 extra characters for advertising campaigns.

The opposite with . htaccess is this way:

RewriteEngine on
RewriteBase /
Options +FollowSymLinks
RewriteCond %{HTTP_HOST} ^meusite.com.br [NC]
RewriteRule ^(.*)$ http://www.meusite.com.br/$1 [R=301,L] 

This above redirects from http://meusite.com/pages.html for http://www.meusite.com/pages.html

Answer 1

Just change the regular expression and redirect URL.

RewriteEngine on
RewriteBase /
Options +FollowSymLinks
RewriteCond %{HTTP_HOST} ^www.meusite.com.br [NC]
RewriteRule ^(.*)$ http://meusite.com.br/$1 [R=301,L]