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→Overview: du Improved
160 MB represents 61% of the total 261 MB. The percentages don't have to add up to 100%, since with these arguments we are excluding files in the target directory. You may choose to add an option to your script to print files as well.
The bar chart in this example is 20 characters long, but this must be dynamic. The 20 characters does <i>not</i> include the square brackets. The resolution of the bar chart must become more accurate as you increase the total size. For example, if the user specifies a length of 100 total characters, in this example 61 of those characters would be equal signs and 39 would be spaces.
The output of each subdirectory should include percentage, size in bytes (or Human readable if the user uses the -H option), the bar chart and the name of the subdirectory.