change domain.com/folder/stuff to domain.com/stuff using mod_rewrite

Question

I would like to 301 redirect

domain.com/folder/blah_blah

to

domain.com/blah_blah

How can I do this using mod_rewrite?

Answer 1

RewriteEngine on
RewriteRule  ^folder/(.*)$  $1

Answer 2

RewriteEngine On
RewriteBase /
RewriteRule ^folder/(.*)$ $1 [R=301,NC,L]

Answer 3

You may want to add QSA as well (=append query string)

So the thing in the brackets would look like [R=301,NC,QSA,L]