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Assume there's an image storage directory, say, ./photos/john_doe, within which there are multiple subdirectories, where many certain files reside (say, *.jpg). How can I calculate a summary size of those files below the john_doe branch?

I tried du -hs ./photos/john_doe/*/*.jpg, but this shows individual files only. Also, this tracks only the first nest level of the john_doe directory, like john_doe/june/, but skips john_doe/june/outrageous/.

So, how could I traverse the entire branch, summing up the size of the certain files?

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3 Answers 3

up vote 6 down vote accepted
find ./photos/john_doe -type f -name '*.jpg' -exec du -ch {} +
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Thank Gilles for shortening the answer –  SHW Jun 26 '12 at 6:34
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du -ch public_html/images/*.jpg | grep total
20M total

gives me the total usage of my .jpg files in this directory.

To deal with multiple directories you'd probably have to combine this with find somehow.

You might find du command examples useful (it also includes find)

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This doesn't traverse the underlying directories? –  mbaitoff Jun 26 '12 at 5:48
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Primarily, you need two things:

  • the -c option to du, to tell it to produce a grand total;
  • either find or ** to traverse subdirectories.
du -ch **/*.jpg | tail -n 1
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