how to schedule my task

[John Summerfied]

Mike Chambers wrote:
> On Sun, 2005-12-25 at 10:31 +0000, Navdeep wrote:
> 
> 
>>On cron i make a sch.cron file  by writing  
>>30 16 * * * /root/scheduler/schedule  (my binary file path) and keep
>>this on root directory.
> 
> 
> Try this..
> 
> 30 16 * * * cd /root/scheduler; ./schedule &
> 
> See if that works.  You may change the time to at least see if it runs
> correctly so you don't have to wait until 4:30 :)
> 
As Great Buckets of Spam noted, that won't work because there's no 
display available.

Writing a GUI application to do interval-based work doesn't seem to me 
the best idea, but now it's done here are some ideas.
1.
vnc
vnc has the ability to run an X session without the user being logged 
in. The idea is that the user will connect some time (maybe but not 
necessarily using a Java-capable browser) to do some work. I could 
almost certainly run your application that way, providing we can agree a 
way to close it down. It wouldn't be interactive though.

2.
This might include the use of vnc.
Some calendar applications can run specific programs at set times. I 
used to use one on OS/2 - it was a standard program that came with OS/2 
Warp. If you don't have a calendar that supports this, then you could 
build the scheduling into the application (it might simply test for the 
presence of a file every little while and rely on an external agent such 
as cron to create that file in a private place) and start it on boot in vnc.

I think displaying on an existing session (which might not exist; and 
which, in a multiuser environment could belong to almost anyone) is 
inherently bad.

-- 

Cheers
John

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