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Get total size of folders with find & du

I can use du like this to get the file size of each file from stdin

find . -name "*.java" -exec du -h {} \;

But I can’t get the total size.. Does anyone have ideas about that?
Thanks!

Answer 1

Answered here:

How to get total size of folders with find and du?

Use xargs(1) instead of -exec:

find . -name bak -type d | xargs du -ch

executes the command for each file found (check the find(1) documentation). Piping to xargs lets you aggregate those filenames and
only run du once.

In your case it would be:

find . -name "*.java" | xargs du -ch

Options:

   -c, --total
          produce a grand total