Simple htacces file that redirects to subfolder

.htaccess

<IfModule mod_rewrite.c>

  RewriteEngine on
	
  # make sure directory listing is disabled
  Options +FollowSymLinks -Indexes
	
  # Use either Cond 1 or Cond 2, or neither, if your host is localhost
	
  # Cond 1: rewrite www.example.com to example.com" uncomment these
  #RewriteCond %{HTTPS} !=on
  #RewriteCond %{HTTP_HOST} !^www\..+$ [NC]
  #RewriteCond %{HTTP_HOST} (.+)$ [NC]
  #RewriteRule ^(.*)$ http://www.%1/$1 [R=301,L]

  # Cond 2: To rewrite example.com to www.example.com" uncomment these
  #RewriteCond %{HTTPS} !=on
  #RewriteCond %{HTTP_HOST} !^www\..+$ [NC]
  #RewriteCond %{HTTP_HOST} (.+)$ [NC]
  #RewriteRule ^(.*)$ http://www.%1/$1 [R=301,L]

  # redirect all to subfolder
  RewriteRule    ^$    subfolder/    [L]
  RewriteRule    (.*) subfolder/$1    [L]

</IfModule>