Is the below correct behavior for du? My expectation was that both du commands would print a summary for 'a/b'. Unexpectedly, the second command only prints a summary for 'a'.
$ mkdir -p a/b $ du -hs a/b a 0 a/b 0 a $ du -hs a a/b 0 a $ du --version du (GNU coreutils) 8.30 [snip] ---- The above is on Ubuntu. On Alpine Linux, I get the same (unexpected) behavior with both the coreutils and busybox versions of du. On Alpine, the coreutils version is: "du (GNU coreutils) 8.32". Thank you.
