adb配置中出现不能识别设备的情况

huan@huan-OptiPlex-7050:/etccdudev/huan@huan−OptiPlex−7050:/etc/udev ls
hwdb.d rules.d udev.conf
huan@huan-OptiPlex-7050:/etc/udevcdrules.d/huan@huan−OptiPlex−7050:/etc/udev/rules.d ls
huan@huan-OptiPlex-7050:/etc/udev/rules.dlltotal8drwxr−xr−x2rootroot40963月282017./drwxr−xr−x4rootroot409612月1901:14../huan@huan−OptiPlex−7050:/etc/udev/rules.d sudo cp -rf ~/Desktop/51-android.rules ./
huan@huan-OptiPlex-7050:/etc/udev/rules.dls51−android.ruleshuan@huan−OptiPlex−7050:/etc/udev/rules.d sudo vi 51-android.rules

huan@huan-OptiPlex-7050:/etc/udev/rules.dcat51−android.rulesSUBSYSTEM==”usb”,MODE=”0666”,OWNER=”huan”huan@huan−OptiPlex−7050:/etc/udev/rules.d sudo /etc/init.d/u
udev ufw unattended-upgrades uuidd
huan@huan-OptiPlex-7050:/etc/udev/rules.dsudo/etc/init.d/udevrestart[ok]Restartingudev(viasystemctl):udev.service.huan@huan−OptiPlex−7050:/etc/udev/rules.d ll
total 12
drwxr-xr-x 2 root root 4096 12月 19 13:50 ./
drwxr-xr-x 4 root root 4096 12月 19 01:14 ../
-rw-r–r– 1 root root 44 12月 19 13:50 51-android.rules
huan@huan-OptiPlex-7050:/etc/udev/rules.dchmod77751−android.ruleschmod:changingpermissionsof‘51−android.rules′:Operationnotpermittedhuan@huan−OptiPlex−7050:/etc/udev/rules.d sudo chmod 777 51-android.rules
huan@huan-OptiPlex-7050:/etc/udev/rules.dsudo/etc/init.d/udevrestart[ok]Restartingudev(viasystemctl):udev.service.huan@huan−OptiPlex−7050:/etc/udev/rules.d adb kill-server
huan@huan-OptiPlex-7050:/etc/udev/rules.d$ adb devices
List of devices attached
* daemon not running. starting it now at tcp:5037 *
* daemon started successfully *

132 adb devices
133 cd /etc
134 ls
135 cd udev/
136 ls
137 cd rules.d/
138 ls
139 ll
140 sudo cp -rf ~/Desktop/51-android.rules ./
141 ls
142 sudo vi 51-android.rules
143 ls
144 cat 51-android.rules
145 sudo /etc/init.d/udev restart
146 ll
147 chmod 777 51-android.rules
148 sudo chmod 777 51-android.rules
149 sudo /etc/init.d/udev restart
150 sudo adb kill-server
151 adb kill-server
152 adb devices
153 lsusb
154 adb devices
155 lsusb
156 adb shell
157 lsusb
158 adb shell
159* adb deviceshi
160 history
161 adb devices
162 adb shell
163 history