Overview
lsusb displays information about USB devices and USB controllers connected to a Linux system. This information can be used for hardware diagnostics, driver troubleshooting, and identifying specific USB devices.
Key Features
- Outputs a list of all connected USB devices
- Displays Device ID (Vendor ID:Product ID)
- Provides manufacturer and product name information
- Checks USB version and speed information
- Supports verbose output
Common Options
These are the options frequently used with the lsusb command.
Displaying and Filtering Information
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Description:
`lsusb` Executes the command.
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Usage Examples
Here are various examples of how to use the lsusb command.
View List of All USB Devices
lsusbOutputs a brief summary of all USB devices connected to the system.
View Detailed Information of USB Devices
lsusb -v | lessOutputs very detailed technical information for each USB device. The output can be lengthy, so it's recommended to use it with `less`.
Search for Devices by Specific Vendor/Product ID
lsusb -d 046d:c077This example searches for a specific Logitech (046d) mouse (c077). Actual device IDs can be found in the default `lsusb` output.
View USB Device Connection Tree Structure
lsusb -tVisualizes the connection relationships between USB hubs and devices in a tree format.
Search for Devices by Name
lsusb | grep -i "webcam"Use `grep` in conjunction with `lsusb` to find devices containing specific strings (e.g., 'Webcam') in the output.
Installation
lsusb is typically part of the `usbutils` package. If it's not installed by default on your Linux distribution, you can install it using the following commands.
Debian/Ubuntu
sudo apt update && sudo apt install usbutilsInstall `usbutils` using the APT package manager.
Fedora/RHEL/CentOS
sudo dnf install usbutils
# or
sudo yum install usbutilsInstall `usbutils` using the DNF or YUM package manager.
Tips & Notes
Useful tips and additional considerations when using lsusb.
Filtering Output
When lsusb output is extensive, you can easily filter for desired information using the `grep` command. For example, to see only devices from a specific manufacturer, use `lsusb | grep "Logitech"`.
- Use `lsusb | grep "[keyword]"` to search for specific devices.
- Use `lsusb -v | grep "[information]"` to search for specific fields within verbose output.
Permissions
Generally, `lsusb` runs without `sudo`. However, to view very detailed information with the `-v` option or access certain devices, running with `sudo` might be necessary to obtain more comprehensive data.
Related Commands
To check information about other hardware components in your system besides USB devices, you can use the following commands:
- `lspci`: Check PCI device information.
- `lshw`: Check all hardware information (very detailed).
- `dmesg`: Check kernel messages (including USB connection/disconnection events).
- `udevadm info --query=all --name=/dev/bus/usb/[bus_number]/[device_number]`: Check detailed udev attributes for a specific USB device.