How to make a 301 redirect to www in .htaccess???

Question

Apache HTTP Server

Hello everyone, you need to redirect to www only from the domain (for example, I enter site.com and it throws me to www.site.com), but what would the IP open normally (for example, the same site, just open by ip now it throws to www.IP but it should just open IP)
here is the code that I have:

RewriteCond %{HTTP_HOST} !^$
RewriteCond %{HTTP_HOST} !^www\. [NC]
RewriteCond %{HTTPS}s ^on(s)|
RewriteRule ^ http%1://www.%{HTTP_HOST}%{REQUEST_URI} [R=301,L]

Answer 1

RewriteEngine On
RewriteBase /

RewriteCond %{HTTP_HOST} .
RewriteCond %{HTTP_HOST} !^www\.example\.com [NC]
RewriteRule (.*) http://www.example.com/$1 [R=301,L]