How To Redirect To Another Directory Within Same Domain in .htaccess

Step 1. Enable mod_rewrite on your Apache web server.

Step 2. Create .htaccess file in root directory.

Step 3. Remove index.php by htaccess
   <IfModule mod_rewrite.c>
      Options +FollowSymLinks -MultiViews
      RewriteEngine On
      RewriteBase /
      RewriteCond %{REQUEST_URI} !^/newdomain [NC]
      RewriteRule ^ /newdomain%{REQUEST_URI} [R=301,L]
   </IfModule>

Step 4. Restart Apache Server  
        sudo service apache2 restart