On 19/05/17 09:32, The Natural Philosopher wrote:
> On 19/05/17 09:28, Mike Scott wrote:
>> On 18/05/17 22:31, Martin Gregorie wrote:
>> ....
>>>> I would imagine a startup script could be inserted into teh init.d
>>>> system to, after the window manager stars up launch what apps in what
>>>> window arrangements are desirable
>>>>
>>> Yes, that would work, and you could use frequently executed cron jobs to
>>> detect that some application has fallen over and restart it, emailing yo
>>> an alarm if it fails more than 'n' times in a row.
>>
>> Am I missing something here? What's wrong with each task being wrapped
>> in a trivial shell script that loops forever, eg:
>>
>> while true; do xterm -e ssh myhost;  mail root -s 'ssh exited'
>> >
>> or similar.
>>
>
> Hmm. You are assuming it crashes in a way that will exit back to that?

No, just fulfilling the OP's stated requirement: "Web browser and
terminal windows should restart and connect to predefined addresses if
closed by accident."

>
> When we did watchdogs in milspec stuff it tended to be within the app,
> write a number that increments every time you write it, outside the app
> (under timer interrupt) if the number doesnt get updated for n seconds,
> destroy the process and recreate it. (or in many cases reboot the whole
> embedded system)
>
> That takes care of 'hung' processes as well

Horses for courses. I don't think the OP is concerned to that level. IMBW.
>
>
>


--
Mike Scott (unet2  [deletethis] scottsonline.org.uk)
Harlow Essex
"The only way is Brexit" -- anon.

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