ABSTRACT
In Chapter 5 we discussed the UNIX filesystem primarily from the user standpoint. UNIX users create, read, write, and purge files. And this is correct — UNIX filesystems exist to make the files accessible to users. But there is a lot of work behind the scenes to fulfill this logical requirement. This part is done by the UNIX system itself, and it is mostly hidden from the users. But UNIX administrators must be aware of this fact and should understand this process. Everybody knows that files reside on disk. They are saved somewhere, and when we need them, we get them. But how it works is more mysterious.
