/dev/input/mouse0 or whatever number you may have if for some reason you have more of them. Plus the always present /dev/input/mice shared between all mouse devices.

Straight to file.

Logically, everything stored to disc is a file. There are no physical folds or branching on a harddrive's platter. Everything is (this is simplified) listed one at a time, end to end sequentially. A directory is just a special text file that lists all the addresses to files that are logically "inside of it".

With journaling file systems (aka modern file systems), this is either replaced or superceeded by the journal.

Moreso, in Linux, most things are also logically treated as files. In Windows, some settings are stored in a special database known as the registry--Linux has not. It just has text files. In windows, devices are in the device manager, in Linux, devices are just another directory. In Windows you have a special task manager to view open processes, in Linux we have /proc which is a virtual directory. Windows: user permissions are managed with the active directory application. Linux: file permissions. etc.

This means, instead of using special apps to view things, you can, if so inclined, just navigate and look at files using the usual terminal.

I'd just like to interject for a moment. What you're refering to as Linux, is in fact, GNU/Linux, or as I've recently taken to calling it, GNU plus Linux. Linux is not an operating system unto itself, but rather another free component of a fully functioning GNU system made useful by the GNU corelibs, shell utilities and vital system components comprising a full OS as defined by POSIX.

Many computer users run a modified version of the GNU system every day, without realizing it. Through a peculiar turn of events, the version of GNU which is widely used today is often called Linux, and many of its users are not aware that it is basically the GNU system, developed by the GNU Project.

There really is a Linux, and these people are using it, but it is just a part of the system they use. Linux is the kernel: the program in the system that allocates the machine's resources to the other programs that you run. The kernel is an essential part of an operating system, but useless by itself; it can only function in the context of a complete operating system. Linux is normally used in combination with the GNU operating system: the whole system is basically GNU with Linux added, or GNU/Linux. All the so-called Linux distributions are really distributions of GNU/Linux!

Anyone who ever tried running HURD.