How to redirect pages of one site to pages of another in .htaccess?

Question

htaccess

Hey!
You need to implement this 301 redirect:
site1.ru -> site2.ru
site1.ru/cat/ -> site2.ru/cat2
site1.ru/cat/item -> site2.ru/item
site1.ru/%any_other_page% - > site2.ru
etc.

That is, you need an arbitrary redirect from one URL to another, without taking into account folders, parameters, and other things, stupidly url1 -> url2, and all urls that are not specified are redirected to site2.ru.
Is it real and how to do it?
Thank you.

Answer 1

RewriteEngine on

# site1.ru/cat/ -> site2.ru/cat2
RewriteRule ^cat/$  https://site2.ru/cat2  [R=301,L]

# site1.ru/cat/item -> site2.ru/item
RewriteRule ^cat/(.+)$  https://site2.ru/$1  [R=301,L]

# site1.ru -> site2.ru
# site1.ru/%любая_другая_страница% -> site2.ru
RewriteRule ^ https://site2.ru  [R=301,L]