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hal-get-property --udi udi --key key [--help] [--verbose] [--version]
hal-set-property --udi udi --key key {--int value | --uint64 value | --string value | --bool value | --strlist-pre value | --strlist-post value | --strlist-rem value | --double value | --remove value} [--help] [--version]
The Hardware Abstraction Layer (HAL) provides a view of the various hardware attached to a system. This view is updated dynamically as hardware configuration changes by means of hotplug or other mechanisms. HAL represents a piece of hardware as a device object. A device object is identified by a unique identifer and carries a set of key/value pairs, referred to as device properties. Some properties are derived from the actual hardware, some are merged from device information files (.fdi files), and some are related to the actual device configuration.
The hal-get-property and hal-set-property commands allow you to get and set properties of hardware that conforms to HAL specifications.
The following options are supported:
--udi udi
Unique device ID.
--key key
Key of the property to set.
--int
Set value to an integer. Accepts decimal or hexadecimal value prefixed with 0x or x.
--uint64
Set value to an integer. Accepts decimal or hexadecimal value prefixed with 0x or x.
--string value
Set value to a string.
--double value
Set value to a floating point number.
--boolean value
Set value to a boolean, that is, true or false
--strlist-pre value
Prepend a string to a list.
--strlist-post value
Append a string to a list.
--strlist-rem value
Remove a string from a list.
--remove value
Indicates that the property should be removed.
--version
Display version and exit.
--help
Display list of options and exit
See attributes(5) for descriptions of the following attributes:
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
| Interface Stability | Volatile |
hald(1M), attributes(5), hal(5)