Re: cron with perl

rather than the user breaking into the program to stop it, perhaps just a daemon that periodically (say once a minute) checks an input queue where you can have a client script send some sort of commands into. then the daemon upon reading a stop command takes the proper set of steps to terminate without other direct action by user.

the hardest line to type correctly is: stty erase ^H

Comment on Re: cron with perl

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Re^2: cron with perl by Pstack (Scribe) on Nov 09, 2010 at 01:07 UTC
mmm .. not sure I follow. The issue is only for the scheduler to be able to get the daemon process started EXACTLY AS IF IT WAS THE USER WHO STARTED IT (complete with user-console for stdout reporting). It works fine already when started by a user, who may cancel continuation on the basis of feedback on display in the console .. ie via stdout. A similar process is also schedule-run in the background with Carp'd logging -- but that, of course, does not permit the stdout-interactivity in a console that provides the cancellation opportunity required here. Ideally maybe a more sophisticated cron-tool would provide this functionality, but that does not seem to be on the horizon, and I just wondered if it could be achieved from the inside so to speak?	[reply]

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Re^2: cron with perl
by Pstack (Scribe) on Nov 09, 2010 at 01:07 UTC

mmm .. not sure I follow. The issue is only for the scheduler to be able to get the daemon process started EXACTLY AS IF IT WAS THE USER WHO STARTED IT (complete with user-console for stdout reporting).

It works fine already when started by a user, who may cancel continuation on the basis of feedback on display in the console .. ie via stdout.

A similar process is also schedule-run in the background with Carp'd logging -- but that, of course, does not permit the stdout-interactivity in a console that provides the cancellation opportunity required here.

Ideally maybe a more sophisticated cron-tool would provide this functionality, but that does not seem to be on the horizon, and I just wondered if it could be achieved from the inside so to speak?

[reply]