I thought to display 0 (or 0<magnitude>) for 1st arg by doing:
du -BY, as -B says I can list a unit for scaling, but for -BY and -BZ I get: du: -B argument 'Y' too large. It doesn't even look to see how much space is used, it immediately returns Y & Z are "too large". Why are those suffixes listed as valid under the program 'usage' and manpage, when they are automatically disallowed? Also something I didn't see as being clear: I don't see where it says it will always round up to next higher unit (it may say it somewhere, I just don't see it and was surprised to see 'du -BT /tmp|hsort -s' show all objects as being 1.0T and for hsort to show a summary of ~148T (hsort sorts by human prefixes and has an optional '-s' switch that shows an additive sum of the sizes).
