命令行控制ｔｏｕｃｈｐａｄ使能

使用环境：ubuntu 16

命令: xinput

 查询设备编号(ｉｄ)：xinput

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ｎａｍｅ@ｐｃ:~$ xinput
⎡ Virtual core pointer                        id=2    [master pointer  (3)]
⎜   ↳ Virtual core XTEST pointer                  id=4    [slave  pointer  (2)]
⎜   ↳ TPPS/2 IBM TrackPoint                       id=13    [slave  pointer  (2)]
⎜   ↳ Logitech M570                               id=9    [slave  pointer  (2)]
⎜   ↳ SynPS/2 Synaptics TouchPad                  id=12    [slave  pointer  (2)]
⎣ Virtual core keyboard                       id=3    [master keyboard (2)]
    ↳ Virtual core XTEST keyboard                 id=5    [slave  keyboard (3)]
    ↳ Power Button                                id=6    [slave  keyboard (3)]
    ↳ Video Bus                                   id=7    [slave  keyboard (3)]
    ↳ Sleep Button                                id=8    [slave  keyboard (3)]
    ↳ Integrated Camera: Integrated C             id=10    [slave  keyboard (3)]
    ↳ AT Translated Set 2 keyboard                id=11    [slave  keyboard (3)]
    ↳ ThinkPad Extra Buttons                      id=14    [slave  keyboard (3)]
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禁止： xinput disable 12
使能： ｘｉｎｐｕｔ　ｅｎａｂｌｅ　１２