Re: df -h shows insufficient precision
- Date: Sun, 26 Aug 2018 01:08:57 -0400
- From: Roberto C. Sánchez <roberto@xxxxxxxxxx>
- Subject: Re: df -h shows insufficient precision
On Sun, Aug 26, 2018 at 03:04:38PM +1000, Zenaan Harkness wrote:
> 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...
No. I actually meant 'di':
$ apt-cache show di
Source: di (4.34-2)
Maintainer: Michael Ablassmeier <abi@xxxxxxxxxx>
Depends: libc6 (>= 2.3)
Description-en: advanced df like disk information utility
`di' is a disk information utility, displaying everything
(and more) that your `df' command does. It features the
ability to display your disk usage in whatever format you
desire/prefer/are used to. It is designed to be portable
across many platforms.
Roberto C. Sánchez