How Linux looks at the size of a folder

Linux view the size of a folder by command:

du 1 -lh  The full path to the folder

example, query the size of the/var folder:

du 1 -lh/  var

Du recursively queries the size of all files under the path (if no parameters are present, all files within the folder are displayed, including the contents of the subfolders in the folder).

Command explanation:

Parameter--max-depth 1-LH sets the recursive depth to 1, and does not query subfolders. Therefore, use this parameter to display only the size of the folder, not the size of its subfolders.

Attention:

Depending on the operating system version, the command might be:

du 1 -lh  The full path to the folder

Or:

du --max-depth=1 -lh  The full path to the folder

How Linux looks at the size of a folder