du

Disk usage: estimate and summarize file and directory space usage. More information: https://ss64.com/osx/du.html.

• List the sizes of a directory and any subdirectories, in the given unit (KiB/MiB/GiB):
  du -{{k|m|g}} {{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 -d {{2}} {{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}}