removing index.php in url in wordpress site.

<Document /var/www/html/>

RewriteEngine on
RewriteBase /


RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteCond %{REQUEST_URI} !^/wp-admin/
RewriteRule ^(.*)$ index.php/$1 [NC,L]

</Document>


permanent link /%postname%/ 

default custom link - /index.php/%year%/%monthnum%/%day%/%postname%/