1). watchprosp 动态监视android系统属性的变化，有变化就会输出:
255|root@android:/ # watchprops 1362449042 persist.sys.autolanguage = 'on' 1362449044 persist.sys.autolanguage = 'off'
2). svc ，控制power, wifi, modem状态。
Available commands: help Show information about the subcommands power Control the power manager data Control mobile data connectivity wifi Control the Wi-Fi manager # svc power usage: svc power stayon [true|false|usb|ac] Set the 'keep awake while plugged in' setting.//设置屏幕的常亮，true保持常亮，false不保持，usb当插入usb时常亮，ac当插入电源时常亮 # svc data usage: svc data [enable|disable] Turn mobile data on or off.//设置移动网络的数据是否启用 Set mobile as the preferred data network//设置移动网络的数据优先于WIFI # svc wifi usage: svc wifi [enable|disable] Turn Wi-Fi on or off.//设置WIFI是否启用 Set Wi-Fi as the preferred data network //设置WIFI优先于移动网络的数据，一般应设置成这样，除非你刻意使用移动网络数据传输 root@android:/data # svc power stayon usb