<http://oneplanetonechild.org/how-many-types-of-files-there-can-be-in-unix/>
<http://schema.org/breadcrumb>
<http://oneplanetonechild.org/how-many-types-of-files-there-can-be-in-unix/#breadcrumb>
<https://oneplanetonechild.org/how-many-types-of-files-there-can-be-in-unix/>