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I am trying to get the disk usage of all the files present in a particular directory using the following commands and I am getting different answers for both. Could anyone explain why?

find ./ -type f -name '*.*' -exec du -csh {} + | grep total$
83M total

find ./ -type f -exec du -csh {} + | grep total$
101M total
38M  total
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Most likely you have files that don't match *.*.

Try

find . -type f ! -name '*.*'
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  • Thanks for the answer. Could you also explain why there are two values in the second case ? – Stuti Sep 6 '18 at 21:39
  • @Stuti It should be clear from running your pipeline without the final grep part. – Kusalananda Sep 6 '18 at 21:55
  • There are two result lines because there are too many names for one invocation of du, it is split in two. – RalfFriedl Sep 7 '18 at 5:25

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