Thanks go out to everyone having answered this question. I've had many
alternative solutions proposed.
In fact, I chose to ask 'route' for the information. (Courtesy, Edward
Dekkers.)
Thanks again for all your help. You're a fantastic source of knowledge
with a remarkable willingness to share your experiences.
Regards
Gustav
Gustav Schaffter wrote:
>
> Hi,
>
> I know I've seen a recipe for this somewhere sometime.
>
> I want to let cron execute a script on regular intervals. This script
> shall look upon the state of my serial port ppp0. If ppp0 is up, then
> certain commands should be executed, otherwise not.
>
> I know that I could use ip-up and ip-down to write some 'indicator file'
> that I can let my new script read and interpret.
>
> But...
>
> I have seen a very elegant solution described (unfortunately I can't
> find it back) where the script looked upon something in the system to
> find out the state of ppp0. May eventually have been something under
> /dev but I really don't remember.
>
> Anyone understand what I'm talking about? ;-)
>
> Anyone have any ideas of how to realize this?
>
> Best regards
> Gustav
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