harmony 鸿蒙log
log
Command Function
This command is used to set and query log configuration.
Syntax
log level [levelNum]
Parameters
Table 1 Parameter description
Parameter | Description | Value Range |
---|---|---|
levelNum | Specifies the level of logs to print. | [0, 5] |
Usage Guidelines
This command can be used only after LOSCFG_SHELL_LK is enabled. Before using this command, set Enable Shell lk to Yes on menuconfig. Debug —> Enable a Debug Version —> Enable Shell —> Enable Shell lK
The log level command sets the log level, which can be any of the following: TRACE_EMG = 0,
TRACE_COMMON = 1,
TRACE_ERROR = 2,
TRACE_WARN = 3,
TRACE_INFO = 4,
TRACE_DEBUG = 5
If the log level specified is not within the value range, a message will be displayed.
If [levelNum] is not specified, this command displays the current log level and how to use it.
If the log level is set to 4 or 5 in the source code of an OpenHarmony small system, a large number of logs will be printed.
Example
Run log level 3.
Output
The log print level is set to WARN.
OHOS # log level 3
Set current log level WARN
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