Display the name of the site manager in WordPress

I need to display the username of the main site administrator for a part of my template.

I have used the following short code to display the email address of the main administrator of the site with which he started WordPress:

<?php bloginfo('admin_email'); ?>

But I did not find any short code to display the username of the main administrator of the site.

Is there such a shortcode or should I get the username of the main administrator of the site in another way?

>Solution :

There is not a shortcode that I know of, but writing one is very simple, and a great exercise to learn shortcode creation:

function admin_email_shortcode() { 
 return bloginfo('admin_email');
}

add_shortcode('admin_email', 'admin_email_shortcode');

Simply add that code to your themes functions.php file and use the shortcode [admin_email] where you want the email address to be displayed.