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Re: SECONDS=0 does not reset SECONDS, or I'm missing something


From: Andreas Kusalananda Kähäri
Subject: Re: SECONDS=0 does not reset SECONDS, or I'm missing something
Date: Thu, 4 Jun 2020 15:03:00 +0200

On Thu, Jun 04, 2020 at 03:00:40PM +0200, Kusalananda Kähäri wrote:
> On Thu, Jun 04, 2020 at 08:48:34AM -0400, Steve Amerige wrote:
> > On 6/4/2020 6:14 AM, Andreas Kusalananda Kähäri wrote:
> > >   #!/usr/local/bin/bash -x
> > > 
> > >   for name do
> > >           SECONDS=0
> > >           rm -r -f "$name"
> > >           [[ SECONDS -gt 0 ]] && sleep "$SECONDS"
> > >   done
> > > 
> > > What I noticed was that the script would go to sleep for a second
> > > every second, even if the deletion of directories was quick.  This
> > > indicates that SECONDS=0 didn't properly reset the SECONDS timer.
> > 
> > Note that your script doesn't have a semicolon after "for name":
> > 
> > for name; do
> > ...
> > done
> 
> That's because it doesn't need one.
> 
> >From the manual:
> 
>       for name [ [ in [ word ... ] ] ; ] do list ; done
> 
> That is, "for name in do list; done" is valid.

Sorry, I meant "for name do list; done" above, which is what I have in
my code.


-- 
Andreas (Kusalananda) Kähäri
SciLifeLab, NBIS, ICM
Uppsala University, Sweden

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