Can anyone explain why du (which advertises the ability to evaluate N file/dir arguments) seems to only be accurate for the first provided argument? See the following:
brett@spider:/> sudo du -smxc tmp
60 tmp
60 total
brett@spider:/> sudo du -smxc tmp bin
60 tmp
1 bin
60 total
brett@spider:/> sudo du -smxc bin
9 bin
9 total
brett@spider:/> sudo du -smxc bin tmp
9 bin
1 tmp
9 total