The 'df' command with a more readable format.

    The 'df' command produces output that can be hard to decipher.  The
    'dfx' command formats the numbers, changes the column order to put the
    more useful columns first, and colorizes the percentage full as it
    crosses certain thresholds.

Usage: dfx [action] # Where action is:

    show  Show the 'df' output in pretty form.  [default]
    help  Help by showing these instructions.