harmony 鸿蒙log

log

This command is used to set and query log configuration.

log level [levelNum]

Table 1 Parameter description

Parameter	Description	Value Range
levelNum	Specifies the level of logs to print.	[0, 5]

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.

Run log level 3.

The log print level is set to WARN.

OHOS # log level 3
Set current log level WARN

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