Re: "extern int errno" was deprecated 2 years before "djbdns" was even written

>> the elegance of a service/run script containing "sleep 60; exec
>> <something_that_exits_when_done> ..." for periodic jobs cannot be
>> beat.
> 
> <plug>
> I daresay it can, by just a bit:
> exec \
> rw-add n d60S waketime \
> rw-sleep \$waketime \
> ...

 Simpler with the same advantage: "do-the-job ; exec sleep 60".
That way, you can wake it up early with "svc -t the-service", and you
don't even need runwhen. Drawback : you can't send signals to do-the-job
with svc, but it would be a risky business anyway (do-the-job is supposed
to be short-lived).

<plug mode="too">
 And, whether you use runwhen or not, you can even spare the cost of
spawning a shell: http://www.skarnet.org/software/execline/
</plug>

-- 
 Ska