How to write .htaccess 301 redirect rule?

I need to 301 redirect some urls. Here is wha开发者_开发百科t i need to redirect

http://www.site.com/?var= to http://www.site.com/

and

http://www.site.com/123/folder/page.html?var= to http://www.site.com/123/folder/page.html

redirect 301 /about.php http://www.kintek.com.au/about

Note the first half uses only the page location

redirect 301 /about.php

And the redirection is the full url

http://www.kintek.com.au/about

This is the right code:

RewriteCond %{QUERY_STRING} var=
RewriteRule (.*)  http://www.example.com/$1?  [R=301,L]