Copyright © tutorialspoint.com

lsusb - Unix, Linux Command

previous next


Advertisements

NAME

lsusb - list USB devices

SYNOPSIS

lsusb [ options ]

DESCRIPTION

lsusb is a utility for displaying information about USB buses in the system and the devices connected to them.

To make use of all the features of this program, you need to have a Linux kernel which supports the /proc/bus/usb interface (e.g., Linux kernel 2.3.15 or newer).

OPTIONS

TagDescription
-v, --verbose
  Tells lsusb to be verbose and display detailed information about the devices shown. This includes configuration descriptors for the device’s current speed. Class descriptors will be shown, when available, for USB device classes including hub, audio, HID, communications, and chipcard.
-s [[bus]:][devnum]
  Show only devices in specified bus and/or devnum. Both ID’s are given in decimal and may be omitted.
-d [vendor]:[product]
  Show only devices with the specified vendor and product ID. Both ID’s are given in hexadecimal.
-D device
  Do not scan the /proc/bus/usb directory, instead display only information about the device whose device file is given. The device file should be something like /proc/bus/usb/001/001. This option displays detailed information like the v option; you must be root to do this.
-t Tells lsusb to dump the physical USB device hierarchy as a tree.
-V, --version
  Print version information on standard output, then exit successfully.

DIAGNOSTICS

TagDescription
cannot open /proc/bus/usb/nnn/nnn, Permission denied (13)
  To get detailed information, lsusb must open the files in /proc/bus/usb in read-write mode. You must be root in order to do this.

RETURN VALUE

If the specified device is not found, a non-zero exit code is returned.

FILES

TagDescription
/usr/share/usb.ids
  A list of all known USB ID’s (vendors, products, classes, subclasses and protocols).
/proc/bus/usb
  An interface to USB devices provided by the post-2.3.15 Linux kernels. Contains per-bus subdirectories with per-device files and a devices file displaying some of the descriptors for each USB device. This interface is also support by some 2.2 Linux kernels.

SEE ALSO

AUTHOR

Thomas Sailer, <sailer@ife.ee.ethz.ch>.
previous next

Copyright © tutorialspoint.com