Hello, In du(1) it reads:
[...]
EXAMPLES
Display a summary of files and folders in the current directory, sorted
by size:
$ du -sh * .??* | sort -h
[...]
This misses file names of the form .a, .1, etc. Better use something like
$ du -ahd1 . | sort -h
Where is the best place to report these trivial documentation fixes?
Regards,
adr.

