D.1. Linux 裡的設備

In Linux various special files can be found under the directory /dev. These files are called device files and behave unlike ordinary files. The most common types of device files are for block devices and character devices. These files are an interface to the actual driver (part of the Linux kernel) which in turn accesses the hardware. Another, less common, type of device file is the named pipe. The most important device files are listed in the tables below.

sda First hard disk
sdb Second hard disk
sda1 First partition of the first hard disk
sdb7 Seventh partition of the second hard disk

sr0 First CD-ROM
sr1 Second CD-ROM

ttyS0 序列埠 0,即 MS-DOS 下的 COM1
ttyS1 序列埠 1,即 MS-DOS 下的 COM2
psaux PS/2 滑鼠設備
gpmdata 虛擬設備,中繼從GPM(滑鼠)服務傳來的資料

cdrom 指向光碟機的符號鏈結
mouse 指向滑鼠設備檔的符號鏈結

null Anything written to this device will disappear
zero 可以從該設備永無休止地讀出零

D.1.1. 設定您的滑鼠

The mouse can be used in both the Linux console (with gpm) and the X window environment. Normally, this is a simple matter of installing gpm and the X server itself. Both should be configured to use /dev/input/mice as the mouse device. The correct mouse protocol is named exps2 in gpm, and ExplorerPS/2 in X. The respective configuration files are /etc/gpm.conf and /etc/X11/xorg.conf.

Certain kernel modules must be loaded in order for your mouse to work. In most cases the correct modules are autodetected, but not always for old-style serial and bus mice[23], which are quite rare except on very old computers. Summary of Linux kernel modules needed for different mouse types:

Module Description
psmouse PS/2 mice (should be autodetected)
usbhid USB mice (should be autodetected)
sermouse Most serial mice
logibm Bus mouse connected to Logitech adapter card
inport Bus mouse connected to ATI or Microsoft InPort card

To load a mouse driver module, you can use the modconf command (from the package with the same name) and look in the category kernel/drivers/input/mouse.



[23] Serial mice usually have a 9-hole D-shaped connector; bus mice have an 8-pin round connector, not to be confused with the 6-pin round connector of a PS/2 mouse or the 4-pin round connector of an ADB mouse.