root权限下的no permissions和解决办法

[root@localhost Qian]# /home/Qian/adb devices
List of devices attached
???????????? no permissions

[root@localhost Qian]# ls -l /home/Qian/adb
-rwxr-xr-x. 1 Qian Qian 350512 1月 5 13:35 /home/Qian/adb
[root@localhost Qian]# /home/Qian/adb shell
error: insufficient permissions for device
[root@localhost Qian]# killall adb
[root@localhost Qian]# killall adb
adb: 没有进程被杀死
[root@localhost Qian]# /home/Qian/adb shell
* daemon not running. starting it now *
* daemon started successfully *

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