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一、adb devices no permissions

1. lsusb -t 设备树直观地查看设备的Bus ID和Device Num，lsusb找到对应的PID和VID
2. 编辑udev规则

sudo vim /etc/udev/rules.d/51-android.rules 
# 添加一下一条
SUBSYSTEM=="usb", ATTRS{idVendor}=="0e8d", ATTRS{idProduct}=="201c",MODE="0666"

3. 重启udev

sudo chmod a+x /etc/udev/rules.d/51-android.rules
sudo /etc/init.d/udev restart

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二、自定义adb server端口

export ANDROID_ADB_SERVER_PORT=30375

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三、动态库目录

#编译期查找
export LIBRARY_PATH=.:$LIBRARY_PATH
#运行时依赖
export LD_LIBRARY_PATH=.:$LD_LIBRARY_PATH

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四、USB抓包

• tcpdump抓包，wireshark分析

modprobe usbmon
tcpdump -D
#find something like this
#3.usbmon3 (USB bus number 3)
tcpdump -i usbmon3 -w usb_log.pcap