What is "filesystem"

Usage examples of "filesystem".

But under Unix the highest level--the root--of the filesystem is always designated with the single character "/" and it always contains the same set of top-level directories: /usr /etc /var /bin /proc /boot /home /root /sbin /dev /lib /tmp and each of these directories typically has its own distinct structure of subdirectories.

Like almost all Linux users, I depend on having all of those details hidden away in thousands of little ASCII text files, which are in turn wedged into the recesses of the Unix filesystem.