xinput 的用法

xinput list | grep 'id='

[root@localhost ~]# xinput list | grep 'id='
⎡ Virtual core pointer                        id=2    [master pointer  (3)]
⎜   ↳ Virtual core XTEST pointer                  id=4    [slave  pointer  (2)]
⎜   ↳ HID 04d9:0499                               id=7    [slave  pointer  (2)]
⎣ Virtual core keyboard                       id=3    [master keyboard (2)]
    ↳ Virtual core XTEST keyboard                 id=5    [slave  keyboard (3)]
    ↳ AT Translated Set 2 keyboard                id=6    [slave  keyboard (3)]
    ↳ Power Button                                id=8    [slave  keyboard (3)]
    ↳ Power Button                                id=9    [slave  keyboard (3)]
[root@localhost ~]# xinput get-button-map "AT Translated Set 2 keyboard"
device has no buttons
[root@localhost ~]# xinput get-button-map "HID 04d9:0499"
1 2 3 4 5 6 7
[root@localhost ~]# xinput get-button-map "Power Button
> "
unable to find device Power Button

[root@localhost ~]# xinput get-button-map "Virtual core keyboard"
device has no buttons
[root@localhost ~]#