<FilesMatch "\.(htaccess|htpasswd|ini|log|sh)$"> Order Allow,Deny Deny from all </FilesMatch>
Like othersite.com replace with mysite.com?
<IfModule mod_rewrite.c>
RewriteEngine On
RewriteCond %{HTTP_HOST} ^otherste.com$
RewriteRule (.*)$ http://mysite.com/$1 [R=301,L]
</IfModule>