How to make 301 redirect in .htaccess (opencart 2.3)?

Question

htaccess

Changed the url in the online store (on opencart 2.3).
It was site.ru/tovar_new/product_1
It became site.ru/product-new/product-1
In general, I replaced the underscore with a dash.
How to make 301 redirect in .htaccess?

Answer 1

RedirectMatch 301 (.*)_(.*)_(.*)_(.*) $1-$2-$3-$4
RedirectMatch 301 (.*)_(.*)_(.*)      $1-$2-$3
RedirectMatch 301 (.*)_(.*)           $1-$2

It is enough to limit ourselves to one last rule: in this case, as many redirects as there are "_" in the path will be filled (for each redirect, the last found occurrence will be corrected).