harmony 鸿蒙chmod

2022-08-09
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chmod

Command Function

This command is used to change file operation permissions.

Syntax

chmod [mode] [filename]

Parameters

Table 1 Parameter description

Parameter	Description	Value Range
mode	Specifies the permissions for a file or directory. The value is an octal number, representing the permission of User (owner), Group (group), or Others (other groups).	[0, 777]
filename	Specifies the file path.	An existing file

Usage Guidelines

Specify mode to change file permissions.
For the files created on the FAT file system, the file permission attributes are the same as those of the mounted nodes. Currently, the node permissions include only user read and write. The group and others permissions do not take effect. In addition, only the user read and write permissions can be modified. The read and write permissions are rw and ro only. There is no such restriction for other file systems.

Note

Currently, the shell does not support this command.

Example

Change the permissions on the hello-openharmony.txt file to 644 and 777.

Output

Modify the permissions on the hello-openharmony.txt file in the /dev directory.

OHOS:/dev$ chmod 644 hello-openharmony.txt
OHOS:/dev$ ll hello-openharmony.txt
-rw-r--r-- 0 0 0 0 1970-01-01 00:00 hello-openharmony.txt
OHOS:/dev$ chmod 777 hello-openharmony.txt
OHOS:/dev$ ll hello-openharmony.txt
-rwxrwxrwx 0 0 0 0 1970-01-01 00:00 hello-openharmony.txt