Du

List the sizes of a directory and any subdirectories, in the given unit (B/KiB/MiB):

      du -b|k|m path/to/directory

  List the sizes of a directory and any subdirectories, in human-readable form (i.e. auto-selecting the appropriate unit for each size):

      du -h path/to/directory

  Show the size of a single directory, in human-readable units:

      du -sh path/to/directory

  List the human-readable sizes of a directory and of all the files and directories within it:

      du -ah path/to/directory

  List the human-readable sizes of a directory and any subdirectories, up to N levels deep:

      du -h --max-depth=N path/to/directory

  List the human-readable size of all `.jpg` files in subdirectories of the current directory, and show a cumulative total at the end:

      du -ch */*.jpg