Re: bash: let exp ? exp : exp problem

[David selby <debian@pusspaws.net>]

Sebastian Kapfer wrote:

> On Sun, 13 Jul 2003 01:20:08 +0200, David selby wrote:
>
>  
>
> > Hello, I am trying to get a bash script to work which will hibernate
> > till 1:00 am, it appears to work OK
> >    
>
> Ahh, the bash :-)
>
>  
>
> > let $_mintoone -gt 1440:_mintoone=$_mintoone-1440
> >    
>
> 	let 'toone = toone > 1440 ? toone - 1440 : toone'
>
> should do the job. (At least if I understood your purpose correctly.)
> Shorter, but with slightly different meaning:
>
> 	let 'toone %= 1440'
>
>  
>
> > PS bash is addictive ...
> >    
>
> Yup. It always stays challenging, mostly because of stupid
> quoting/nonquoting issues, arcane syntax and the lack of proper error
> messages.
>
>  
>
> > PPS I am not using cron since the script uses xmessage and executed via
> > cron causes xhost access problems, just in case you were wondering ....
> >    
>
> If you set up DISPLAY correctly, it should work IMHO.
>
>  
let 'toone %= 1440' ... very neat !

The error messages certainly are challenging ... and cryptic

Many thanks
Dave