# Ubuntu – How to detect an USB device

usb

I got a scenario, where a software works only when you insert the USB device provided by the software vendor in windows operating system. Im trying to find the content stored in the USB device. In windows operating system, the USB device icon is not shown in My_Computer. I thought, I can see the content or atleast detect the USB device in Ubuntu.

Also in ubuntu, the drive is not detected. I tried "sudo fdisk -l" to know the file system, but its not useful. The drive is not detected at all.

I wanted to know, how the software works only when the USB drive is inserted and it wont when it is not inserted. Do they have any files stored in the USB device? In any case, how can we detect such kind of device in Ubuntu?

• To detect your USB device, in a terminal, you can try:

• lsusb , example:

$lsusb Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 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 001 Device 002: ID 046d:0809 Logitech, Inc. Webcam Pro 9000 Bus 003 Device 002: ID 046d:c016 Logitech, Inc. Optical Wheel Mouse  • or this powerful tool, lsinput , 1st install it, and then try it, it lists all input devices including your USB device : sudo apt-get install input-utils lsinput  example: $ lsinput
/dev/input/event0
...

/dev/input/event1
...

/dev/input/event2
...

/dev/input/event3
bustype : BUS_USB
vendor  : 0x46d
product : 0xc016
version : 272
name    : "Logitech Optical USB Mouse"
phys    : "usb-0000:00:1d.1-2/input0"
uniq    : ""
bits ev : EV_SYN EV_KEY EV_REL EV_MSC

• udevadm , with this command line, you need to unplug the device before using the command and then plug it to see it:

\$ udevadm monitor --udev
monitor will print the received events for:
UDEV - the event which udev sends out after rule processing