Crontab - fire every 5 seconds?

[craigcurtin]

Guys,

I want to fire a job every 5 seconds on the minute - i.e. 1:01 am + 5 Sec etc - not just 5 seconds after it first starts (get data from my Inverter) - i figured this would be easy with crontab but alas can not seem to find it.

Any ideas or alternate trigger nodes

I only want this to fire after sunrise and finish at sunset - but i figure i will use the within-time node to direct that

Craig

[bakman2]

You could use the cron-plus node + a time-range-switch node.

Cron expression: */5 * * * * * (does not work in 'normal' linux cron, but should work with the cron-plus node)

This will fire every 5 seconds on the minute and you could pass it on a time-range-switch that can check if it is between sunrise/set.

[dceejay]

Or fire on every minute then a 5 second delay node

[Steve-Mcl]

@craigcurtin

I want to fire a job every 5 seconds on the minute - i.e. 1:01 am + 5 Sec etc - not just 5 seconds after it first starts (get data from my Inverter) - i figured this would be easy with crontab but alas can not seem to find it.

Do you mean every 5 secs past a minute (e.g. 00:00:05, 00:01:05, 00:02:05, ...)

Or do you mean every 5s every minute (on the 5s mark) (e.g. 00:00:00, 00:00:05, 00:00:10, ...)

Or do you mean 5s past the minute and every 5 of that minute (e.g. 00:00:05, 00:00:10 --> 00:00:55, 00:01:05, 00:01:10, ...)

[craigcurtin]

@Steve-Mcl

Or do you mean 5s past the minute and every 5 of that minute (e.g. 00:00:05, 00:00:10 --> 00:00:55, 00:01:05, 00:01:10, ...)

Yep so we hit 5 seconds past midnight and i want it to start and then keep firing every 5 seconds (forever)

I can then use other nodes to filter that as to between what hours (Sunrise and Sunset) i want it to actually make the modbus call

Thanks for the examples looks like it will do exactly what i want.

regards

Craig