Can't the permissions of a Linux folder be changed?

In a Linux system, only the owner or superuser of a file or folder can change its permissions, because the permissions of folders and files are determined by the access control list of the file system and the user identity. If it is not the file The owner of the folder, you may need to run the chmod command as superuser using the sudo command.

The operating system of this tutorial: Linux5.18.14 system, Dell G3 computer.

In a Linux system, the permissions of folders and files are determined by the access control list (ACL) of the file system and the user identity. Normally, only the owner of a file or folder or the superuser (root) can change its permissions.

The reasons why the permissions of the folder cannot be changed are:

1. Not the owner of the folder and insufficient permissions:

Only files or folders Only the owner and superuser (root) can change its permissions. If you are not the owner of a folder and do not have sufficient permissions, you will not be able to change its permissions.

2. The mounted file system is read-only:

If the file system where the folder is located is mounted in read-only mode, you will not be able to change its permissions. You can use the mount command to check the mount options of a file system.

To change the permissions of a folder, you can use the chmod command. The following are some common usages of the chmod command:

chmod x foldername: Add executable permissions to the folder. chmod -x foldername: Remove the executable permissions of the folder. chmod 755 foldername: Set the permissions of the folder to rwxr-xr-x. chmod 700 foldername: Set the permissions of the folder to rwx------.

Please note that only the owner of the folder and the super user (root) can change the permissions of the folder. If you are not the owner of the folder, you may need to run the chmod command as superuser using the sudo command.

If you still can't change the folder's permissions, it may be due to other restrictions or configuration issues. In this case, you may need to further check your system settings or contact your system administrator for assistance.

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