Ok;
After running that a few days, it works fine, but... the interval between
updates
is all over the place.
I rewrote it, to only change the sleep value under 2 circumstances:
First time run, or after a failure.
Now it's updating hourly again.
I will not make the same mistake of posting it to the list, because archiving a
possibly buggy script that someone may copy someday is not a great idea.
However I think the methodology is now sound, so write your own or mail me
directly
if you want a copy of it to adopt.
On Fri, Jun 01, 2012 at 04:45:24PM +1000, David Diggles wrote:
> > #!/bin/sh
> > remaining=$1;shift
> > cmd=$@
> > lock=/var/run/$(basename $1).lock
> > [ -f $lock ] || {
> > touch $lock
> > while [ $remaining -gt 0 ]; do
> > seconds=$(($RANDOM % $remaining))
> > echo $(date) $seconds >> $lock
> > sleep $seconds
> > $cmd && return || remaining=$(($remaining - $seconds))
> > done
> > rm $lock
> > }
> >
>
> *groan*.. another mistake.. I'm such an idiot sometimes ;-)
>
> I don't recommend running this without checking it first.
>
> #!/bin/sh
> remaining=$1;shift
> cmd=$@
> lock=/var/run/$(basename $1).lock
> [ -f $lock ] || {
> touch $lock
> while [ $remaining -gt 0 ]; do
> seconds=$(($RANDOM % $remaining))
> echo $(date) $seconds >> $lock
> sleep $seconds
> $cmd && break || remaining=$(($remaining - $seconds))
> done
> rm $lock
> }
