android系统中的system/usr目录为用户文件夹，包含了共享、键盘布局、时间区域文件等，具体内容如下，个人推测为development 目录和packages 目录生成
/system/usr/keychars
/system/usr/keylayout /system/usr/share /system/usr/srec /system/usr/keychars/qwerty.kcm.bin /system/usr/keychars/qwerty2.kcm.bin /system/usr/keychars/trout-keypad-qwertz.kcm.bin /system/usr/keychars/trout-keypad-v2.kcm.bin /system/usr/keychars/trout-keypad-v3.kcm.bin /system/usr/keychars/trout-keypad.kcm.bin /system/usr/keylayout/h2w_headset.kl /system/usr/keylayout/qwerty.kl /system/usr/keylayout/trout-keypad-qwertz.kl /system/usr/keylayout/trout-keypad-v2.kl /system/usr/keylayout/trout-keypad-v3.kl /system/usr/keylayout/trout-keypad.kl /system/usr/share/bsk /system/usr/share/zoneinfo /system/usr/share/bsk/V_FD_speed_101.bsk /system/usr/share/bsk/V_FD_std_101.bsk /system/usr/share/zoneinfo/zoneinfo.dat /system/usr/share/zoneinfo/zoneinfo.idx /system/usr/srec/config /system/usr/srec/config/en.us /system/usr/srec/config/en.us/baseline.par /system/usr/srec/config/en.us/baseline11k.par /system/usr/srec/config/en.us/baseline8k.par /system/usr/srec/config/en.us/dictionary /system/usr/srec/config/en.us/g2p /system/usr/srec/config/en.us/grammars /system/usr/srec/config/en.us/models /system/usr/srec/config/en.us/dictionary/basic.ok /system/usr/srec/config/en.us/dictionary/cmu6plus.ok.zip /system/usr/srec/config/en.us/dictionary/enroll.ok /system/usr/srec/config/en.us/g2p/en-US-ttp.data /system/usr/srec/config/en.us/grammars/VoiceDialer.g2g /system/usr/srec/config/en.us/models/generic.swiarb /system/usr/srec/config/en.us/models/generic11.lda /system/usr/srec/config/en.us/models/generic11_f.swimdl /system/usr/srec/config/en.us/models/generic11_m.swimdl /system/usr/srec/config/en.us/models/generic8.lda /system/usr/srec/config/en.us/models/generic8_f.swimdl /system/usr/srec/config/en.us/models/generic8_m.swimdl
