sh 'sleep' and trap?

[krad]

send a kill to the script and then to the sleep process itself?


On 16 July 2014 10:31, Karl Pielorz <kpielorz_lst at tdx.co.uk> wrote:

>
> Hi All,
>
> I have a script, similar to this:
>
> "
> #!/bin/sh
>
> echo $$ >/var/run/mypid.pid
> trap "rm /var/run/mypid.pid; exit 0" EXIT
>
> while [ 1 ]
> do
>
>    do_stuff
>    sleep 60
>
> done
> "
>
> This works - but an attempt to 'kill' it, e.g.
>
> kill `head -1 /var/run/mypid.pid`
>
> Takes up to 60 seconds, before 'sleep' completes, control returns back to
> the shell - which see's the signal, and quits.
>
> Is there a better way of doing this? - i.e. some way the shell can 'pass
> time' but still receive signals in a timely manner?
>
> The only work around I could come up with was to change the 'sleep 60'
> into a loop that does 60 * 1 second sleeps, not ideal though :(
>
> Cheers,
>
> -Karl
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