Re: EPOCHREALTIME to days, hours, minutes, seconds

[Alex fxmbsw7 Ratchev]

EPOCHSECONDS doesnt have . dot ... EPOCHREALTIME has

On Fri, Aug 20, 2021, 14:22 hancooper <hancooper@protonmail.com> wrote:

> ‐‐‐‐‐‐‐ Original Message ‐‐‐‐‐‐‐
> On Friday, August 20, 2021 7:52 AM, Andreas Kusalananda Kähäri <
> andreas.kahari@abc.se> wrote:
>
> > On Fri, Aug 20, 2021 at 10:04:27AM +0300, Tapani Tarvainen wrote:
> >
> > > On Thu, Aug 19, 2021 at 06:38:12PM +0000, hancooper via (
> help-bash@gnu.org) wrote:
> > >
> > > > Is there a neat way to convert from decimal seconds (result from
> > > > EPOCHREALTIME) to days, hours, minutes, seconds?
> > >
> > > If you are treating it as a date (rather than a time difference),
> > > you can do simply
> > > A=$EPOCHREALTIME
> > > date -d @$A +'%d %H:%M:%S'
> > > Adjust format to taste.
> > > If it's a time difference but less than a year, and you want days,
> > > hours, minutes and seconds in variables, you can do it like this:
> > > eval $(date -d @$A +'days=%j hours=%H minutes=%M seconds=%S.%N')
> >
> > Quoting would be nice.
> >
> > > days=$((days-1))
> > > If you want to discard extra zeroes:
> > > seconds=${seconds%000}
> > > seconds=${seconds#0}
> > > hours=${hours#0}
> > > minutes=${minutes#0}
> >
> > If you're using bash but don't have other GNU tools installed, and only
> > want second granularity, then use printf instead:
> >
> > now=$EPOCHSECONDS
> > printf -v seconds '%(%S)T' "$now"
> > printf -v minutes '%(%M)T' "$now"
> > printf -v hours '%(%H)T' "$now"
>
>
> How can I deal with seconds that includes fractional part ?
>
> This produces error
>
> Elapsed Time bash: printf: 13.506899: invalid number
> bash: printf: 13.506899: invalid number
> bash: printf: 13.506899: invalid number
> bash: printf: 13.506899: invalid number
>
>
> now=$EPOCHSECONDS
> printf -v seconds '%(%S)T' "$t"
>
>
>