hwdb - Linux

Overview

hwdb (Hardware Database) is a command-line tool used for managing hardware descriptions in a Linux system. It allows administrators to create, modify, and delete hardware descriptions stored in the Hardware Definition Database (HDB), a repository containing information about hardware devices connected to the system.

Syntax

hwdb [options] <subcommand> [arguments]

Options/Flags

  • -d, –debug: Enable debug mode.
  • -h, –help: Display help and usage information.
  • -v, –verbose: Enable verbose output.

Subcommands

  • hwdb add: Adds a new hardware description to the HDB.
  • hwdb del: Deletes a hardware description from the HDB.
  • hwdb modify: Modifies an existing hardware description in the HDB.
  • hwdb list: Lists all hardware descriptions in the HDB.
  • hwdb dump: Dumps the entire HDB to a file.

Examples

Add a new hardware description:

hwdb add usb:\/001\/002

Delete a hardware description:

hwdb del usb:\/001\/002

List all hardware descriptions:

hwdb list

Common Issues

  • Error: Hardware description not found.

    • Verify the hardware description is correct.
    • Make sure the hardware device is connected to the system.

  • Error: Permission denied.

    • Run the command as root or with sudo.

Integration

hwdb can be integrated with other commands and tools for advanced tasks, such as:

# Create a hardware description and add it to the HDB
echo 'usb:001/002' | hwdb add

# Dump the HDB to a file
hwdb dump > hdb.dump

Related Commands

  • lspci: Lists PCI devices.
  • lsusb: Lists USB devices.