param
The param tool enables you to operate system parameters. It is valid only for standard-system devices.
Prerequisites
- You have obtained the hdc tool to run hdc shell commands.
- The device is properly connected.
Command Description
| Command | Description |
|---|---|
| ls [-r] [name] | Displays the information about the system parameter that matches the given name. If -r is carried, the information is obtained based on the parameter permission. If -r is not carried, the information is directly obtained. |
| get [name] | Obtains the value of the system parameter with the given name. If no name is specified, the values of all system parameters are returned. |
| set name value | Sets the value for the system parameter with the given name. |
| wait name [value] [timeout] | Waits for the system parameter with the given name to match the specified value. Fuzzy match is supported. For example, ***** indicates any value, and val* indicates matching of only the first three val characters. timeout indicates the waiting time, in seconds. If it is not set, the default value 30s is used. |
| save | Persistently saves the parameters to the workspace. |
Example
-
To display information about the system parameter that matches a given name, run the following command:
param ls [-r] [name]Usage Example
-
To obtain the value of the system parameter with the given name, run the following command:
param get [name]Usage Example
-
To set the value for the system parameter with the given name, run the following command:
param set name valueUsage Example
-
To wait for the system parameter with the given name to match the specified value, run the following command:
param wait name [value] [timeout]Usage Example
-
To persistently save the parameters to the workspace, run the following command:
param saveUsage Example
