Linux command
hwdb 命令
安全
权限或系统影响较大，执行前请核对目标。
常用示例
Update hardware database
sudo systemd-hwdb update
Query device properties
systemd-hwdb query [modalias]
Show hardware database path
systemd-hwdb --help
说明
hwdb (Hardware Database) is a systemd component that maps hardware properties to udev device attributes. It matches hardware by modalias strings and sets properties like device names, permissions, and driver hints. The database is compiled from text files in /usr/lib/udev/hwdb.d/ and /etc/udev/hwdb.d/ into a binary format for fast matching.
参数
- update
- Compile hwdb files to binary.
- query _modalias_
- Query properties for modalias.
- --path _path_
- Custom hwdb path.
- --root _root_
- Root directory.
- --strict
- Strict parsing mode.
- --usr
- Use /usr directory.
FAQ
What is the hwdb command used for?
hwdb (Hardware Database) is a systemd component that maps hardware properties to udev device attributes. It matches hardware by modalias strings and sets properties like device names, permissions, and driver hints. The database is compiled from text files in /usr/lib/udev/hwdb.d/ and /etc/udev/hwdb.d/ into a binary format for fast matching.
How do I run a basic hwdb example?
Run `sudo systemd-hwdb update` in a terminal, then adjust file names, paths, flags, or remote targets for your system.
What does update do in hwdb?
Compile hwdb files to binary.