ipfw output cannot be redirected when run in crontab (!)

[Eduardo Viruena Silva]

On Fri, 2 May 2003, Josh Brooks wrote:

>
> I am having a very bizarre problem.
>
> I have a script that does this:
>
> ipfw show >> /some/file
>
> Easy.  I run this as root to test it, and it works.  Every time I run it,
> the previous iteration of it overwrites /some/file with the new `ipfw
> show`.
>
> But when I put that command in a script and run it out of cron, not only
> does the output not get redirected into the file, but further, nothing
> gets sent to the file.
>
> I can even do things like this:
>
> echo $date >> /some/file
> ipfw show >> /some/file
> echo $date /some/file
>
> and put that script in cron - if i watch the file, it gets updated every
> time with the new dates, but there is nothing between them - the ipfw show
> output is just not getting there (!)
>
> I thought maybe it was a problem with the ipfw show output, but it works
> when I run it myself, so the script is sane ...


when something goes wrong, cron sends mail to the owner of the
cron table, in this case, root.

is root receiving mail?
if it is, what does it say?


>
> Is there some reason that you can't run `ipfw show` inside of cron ?
>

I just made it, and it works.

> Thanks!
>
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