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Lists everithing using -l "long listing format" wich includes the space used by the folder. Displays it in -h "human readable form" (i.e. 2.2G, 32K), and -R recurses subfolders.
grep -e using a regex, show lines containing the word "total" or a ":" at the end of the line (those with the name of the folder) only.
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If you can do better, submit your command here.
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