在使用Ubuntu的朋友应该碰到过在执行adb相关命令的时候会提示如下的错误：
liubzh@liubzh-PC:/$ adb shell
error: insufficient permissions for device
liubzh@liubzh-PC:/$ adb devices
List of devices attached
????????????no permissions
在网络上搜索解决方案，发现最多的是如下的建议：
更改用户和组为root：
转到adb所在的目录
shily@hh-desktop:~$cd ~/sdk/android-sdk_eng.sdk_linux-x86/tools
shily@hh-desktop:~/sdk/android-sdk_eng.sdk_linux-x86/tools$ls -ladb
-rwxr-xr-x 1 shily shily 341694 2010-05-11 05:46 adb
shily@hh-desktop:~/sdk/android-sdk_eng.sdk_linux-x86/tools$sudo chown root:root adb
[sudo] password for shily:
shily@hh-desktop:~/sdk/android-sdk_eng.sdk_linux-x86/tools$ls -ladb
-rwxr-xr-x 1root root 341694 2010-05-11 05:46 adb
shily@hh-desktop:~/sdk/android-sdk_eng.sdk_linux-x86/tools$sudo chmod u+s adb
shily@hh-desktop:~/sdk/android-sdk_eng.sdk_linux-x86/tools$ls -ladb
-rwsr-xr-x 1 root root 341694 2010-05-11 05:46 adb
shily@hh-desktop:~/sdk/android-sdk_eng.sdk_linux-x86/tools$
或者直接以root启动adb-server：
So you probably need to do “adb start-server” as root first:
ubuntu$ sudo ./out/host/linux-x86/bin/adb kill-server
ubuntu$ sudo ./out/host/linux-x86/bin/adb start-server
* daemon not running. starting it now *
* daemon started successfully *
ubuntu$ ./out/host/linux-x86/bin/adb shell
但是，这样还是很麻烦，我们应该通过Android官方网站的方式来解决这个问题：
Set up your system to detect your device.
If you're developing on Windows, you need to install a USB driver for adb. For aninstallation guide and links to OEM drivers, see theOEM USBDrivers document.
If you're developing on Mac OS X, it just works. Skip this step.
If you're developing on Ubuntu Linux, you need to add audev rules file that contains a USB configuration for each type of deviceyou want to use for development. In the rules file, each device manufactureris identified by a unique vendor ID, as specified by theATTR{idVendor} property. For a list of vendor IDs, seeUSB Vendor IDs, below. To set up device detection onUbuntu Linux:
Log in as root and create this file: /etc/udev/rules.d/51-android.rules.
Use this format to add each vendor to the file:
SUBSYSTEM=="usb", ATTR{idVendor}=="0bb4", MODE="0666", GROUP="plugdev"
In this example, the vendor ID is for HTC. The MODEassignment specifies read/write permissions, andGROUP defineswhich Unix group owns the device node.
Note: The rule syntaxmay vary slightly depending on your environment. Consult theudevdocumentation for your system as needed. For an overview of rule syntax, seethis guide towriting udevrules.
Now execute:
chmod a+r /etc/udev/rules.d/51-android.rules
详见：http://developer.android.com/tools/device.html
详见：http://developer.android.com/tools/device.html
我们只需要这样在udev中订制化我们自己的usb设备即可。
如下命令我们可以查看vendor id和product id：
liubzh@liubzh-PC:~$ lsusb
Bus 002 Device 009: ID 24e3:7112<strong> </strong>
Bus 002 Device 003: ID 064e:c108 Suyin Corp.
Bus 005 Device 002: ID 192f:0916 Avago Technologies, Pte.
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 004 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 005 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 006 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 007 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Configuring USB Access
Under GNU/Linux systems (and specifically under Ubuntu systems),regular users can't directly access USB devices by default. Thesystem needs to be configured to allow such access.
The recommended approach is to create a file/etc/udev/rules.d/51-android.rules (as the root user) and to copythe following lines in it.<username> must be replaced by theactual username of the user who is authorized to access the phonesover USB.
如：
SUBSYSTEM=="usb", ATTR{idVendor}=="24e3", ATTR{idProduct}=="7112", MODE="0600", OWNER="liubzh"
重新插拔USB设备，adb命令将会正常被执行。