custom column with permalinks

permalink-col.php

<?php

// can save to path/to/wp/wp-content/mu-plugins/permalink-col.php

add_filter( 'manage_pages_columns', 'yourprefix_manage_pages_columns' );
function yourprefix_manage_pages_columns( $posts_columns ) {
	$posts_columns['permalink'] = 'Permalink';
	return $posts_columns;
}

add_action( 'manage_pages_custom_column', 'yourprefix_manage_pages_custom_column', 10, 2 );
function yourprefix_manage_pages_custom_column( $column_name, $postID ) {
	if ( 'permalink' == $column_name ) {
		echo get_the_permalink( $postID );
	}
}