Scheduling on tuesday every other week

[manveru]

I'm trying to figure out a way to specify a schedule that occurs every two weeks on Tuesday. So far I've only come up with 0 0 * * tue#2,tue#4, which is not correct as a month may have between 4-5 Tuesdays.

Is there some way to solve this issue using Rufus::Scheduler::CronLine or should I implement a final check in my code and simply call it every Tuesday like Date.today.cweek % 2 == 0?

[jmettraux]

Hello,

I did my own google search and every one seems to be implementing her/his own version of the "final check".

https://serverfault.com/questions/633264/cronjob-run-every-two-weeks-on-saturday-starting-on-this-saturday
https://stackoverflow.com/questions/350047/how-to-instruct-cron-to-execute-a-job-every-second-week

I'd say go with your final check.

Maybe I should allow for some kind of guard when setting up Rufus::Scheduler::CronLine (though future versions will use https://github.com/floraison/fugit)

Best regards and thanks for Ramaze and friends.

[manveru]

Thanks for the answer, I went ahead with the final check, it's a one-liner anyway but splits the logic in two places which I'm not a big fan of. Either way I think it'd be a pretty useful feature but it's understandable that you wouldn't implement something that's not supported by anything else (and would make calculations even more difficult).

[jmettraux]

Should it look like 0 0 * * tue/2? But then, odd versus even Tuesdays.

[jmettraux]

Moved issue to fugit where the parsing for future versions of rufus-scheduler is implemented.

Thanks again.

[jmettraux]

Another way:

scheduler.every('2w', first: next_tuesday_at_midnight()) do
  # ...
end