linux2.6.31版本以后usb/devices输出信息使用usb-devices查看

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因工作需要，查看挂载在ubuntu13.04上的一款usb设备的Product和Vendor信息，发现cat /proc/bus/usb/devices文件不存在

后来发现在linux2.6.31以后的版本相关信息要在usb-devices中查看

man usb-devices信息截取

usb-devices(1) Linux USB Utilities usb-devices(1)

NAME
usb-devices - print USB device details

SYNOPSIS
usb-devices

DESCRIPTION
usb-devices is a (bash) shell script that can be used to display details of USB buses in the system and the devices connected to them.

...

/proc/bus/usb/devices
Location where the usb/devices file can normally be found for Linux kernels before 2.6.31, if usbfs is mounted.

输出信息：

T: Bus=01 Lev=02 Prnt=02 Port=00 Cnt=01 Dev#= 13 Spd=12 MxCh= 0
D: Ver= 0.20 Cls=00(>ifc ) Sub=00 Prot=00 MxPS=64 #Cfgs= 1
P: Vendor=23d8 ProdID=0285 Rev=01.00
S: Manufacturer=CREATOR(CHINA)TECH CO.,LTD
S: Product=CRT-285
S: SerialNumber=S130622000
C: #Ifs= 1 Cfg#= 1 Atr=a0 MxPwr=400mA
I: If#= 0 Alt= 0 #EPs= 2 Cls=03(HID ) Sub=00 Prot=00 Driver=usbhid

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