Wordpress Greet Logged In User Shortcode

glusc.php

// Wordpress Greet Logged In User Shortcode

function detective_otter_found_you( $atts ) {
	global $current_user, $user_login;
	get_currentuserinfo();

	if ($user_login) {
		$display_name = '<a href="' . get_permalink( get_option('woocommerce_myaccount_page_id') ) . '">' . $current_user->display_name . '</a>';
		return 'Hi ' . $display_name . ','; //Change Hi to desired greeting.
	} else {
	return 'Hi <a href="' . get_permalink(get_option('woocommerce_myaccount_page_id')) . '">Guest</a>,';//Change Hi and guest to desired greeting.
	}
}

add_shortcode( 'show_loggedin_as', 'detective_otter_found_you' );

usage.txt

Use shortcode [show_loggedin_as] anywhere to print Hi Person (Person = Users display name)
Name links to My Accoount Page
If user is not logged in the shortcode displays Hi Guest 
Guest Links to My Account login page.