systemd-hwdb
Manage udev hardware database
TLDR
Update hardware database
$ systemd-hwdb update
Query database for modalias$ systemd-hwdb query [modalias]
Update with strict error checking$ systemd-hwdb -s update
Update in /usr/lib/udev$ systemd-hwdb --usr update
Update for alternate root$ systemd-hwdb -r [/path/to/root] update
SYNOPSIS
systemd-hwdb [OPTIONS] COMMAND
DESCRIPTION
systemd-hwdb manages the udev hardware database, which maps hardware identifiers (modalias) to properties and metadata. The database is compiled from text files in `/usr/lib/udev/hwdb.d/` and `/etc/udev/hwdb.d/` into a binary format for fast lookup.
This database is used by udev rules to identify hardware and set appropriate properties.
PARAMETERS
-s, --strict
Return non-zero exit on parsing errors--usr
Update database in /usr/lib/udev instead of /etc/udev-r, --root= PATH
Operate on alternate root filesystem
COMMANDS
update
Compile hwdb source files into binary databasequery MODALIAS
Query database for a specific modalias
CAVEATS
Must run `systemd-hwdb update` after modifying hwdb source files. The binary database is architecture-specific. Changes in /etc override /usr/lib entries.
HISTORY
systemd-hwdb replaces the older udev hwdb management, providing hardware identification data used throughout the system for device setup.