How to configure Apache to rewrite following condition?

Question

I'd like to enable Apache mod_rewrite to work as follow:

www.mysite.example/g/abcde   "redirect" to www.mysite.example/mypage.php?code=abcde&mode=g

and

www.mysite.example/v/abcde   "redirect" to www.mysite.example/mypage.php?code=abcde&mode=v

My questions are:

1. How to configure mod_rewrite in my Ubuntu 18.04 installation ?

2. How to write that configurations ?

Answer 1

I solved:

RewriteRule ^g/([A-Za-z0-9-/_]+)?$ /g.php?param1=$1&%{QUERY_STRI$