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Re: df -h shows insufficient precision




On Sat, Aug 25, 2018 at 10:38:19PM -0400, Roberto C. Sánchez wrote:
> On Sun, Aug 26, 2018 at 12:25:44PM +1000, Zenaan Harkness wrote:
> > A regular itchy annoyance for years now:
> > 
> > df shows bytes, df -h shows only one decimal place, so e.g. on a
> > 1.8TiB drive "1.6T" is the free space, but that resolution/ precision
> > is insufficient. Of course I can fire up bc, set scale=20 and do some
> > powers of 1024 division, but that's all very clunky.
> > 
> > How hard would it be to add an option to bc, to choose the number of
> > decimal places to use in the output, or the number of digits of
> > precision to display?
> > 
> 
> Have you looked at the -k and -B options?  Also, di has the -d option

I assume you mean "du"?

Unfortunately the du command recursively scans directories - not a
quick option when all you want is a summary for the drive/ partition.

> which is more flexible and it also supports format strings.  You should
> be able to make it produce output in exactly the way you need.

Thank you - I do use du from time to time, but it's just too slow for
whole-drive (or partition) "quick" checks...