Cron 1

[Johnsf]

Hi,

I need to setup cron so that it runs a task at 7:15 am for the first time and then every 5 minutes after that till 7 pm.

I know how do set it up to do every 5 minutes between 7 am to 7 pm but am unable to figure out how to get it to run the task only at 7:15 am to start with.

Is this possible?

Thanks, John

 

[KenCunningham]

Why not have two jobs, one for each quarter-past each hour in your time period, and the other for all other 5 minute intervals?

 

[nawlej]

Why not have two jobs, one for each quarter-past each hour in your time period, and the other for all other 5 minute intervals?

Wouldnt that mean you have the same job running 2 times concurrently on 15,30,45,0?

___________________________________
[morse]--... ...--[/morse], Eric.

 

[KenCunningham]

Hmm - early morning rubber brain, but not entirely wrong - why would it run every 15 minutes in an hour?

Something like this then, perhaps:

15,20,25,30,35,40,45,50,55 07 * * * <job>

15 08-18 * * * <job>

00,05,10,20,25,30,35,40,45,50,55 08-18 * * * <job>

00 19 * * * <job>

There are variants of the minute construct of course, but this should do the job. Might be wrong, but my mind's on the footie right now!

 

[nawlej]

this is what you need I think.....

minute hour dom month dow user cmd
15-55/5,7-19,*,*,* <user> <cmd>

___________________________________
[morse]--... ...--[/morse], Eric.

 

[KenCunningham]

As I said, Eric, there are variants of the minute construct (some of which I'm unaware of, I have to say), but wouldn't your version miss out all 00, 05 and 10 minutes between 8:00 am and 19:00?

 

[nawlej]

yeah it would....sorry, not awake yet.....I guess you are gonna need two jobs:

15-55/5,7,*,*,* <user> <cmd>
*/5,8-19,*,*,* <user> <cmd>

Thats basically what you would need to do.....

The first one tells you to run the command in the period of 7:15 to 7:55, every five minutes.....

Then the second one kicks off at 8 o clock, telling it to run the command every five minutes during the hour until 19:00 hours.

___________________________________
[morse]--... ...--[/morse], Eric.

 

[KenCunningham]

Agreed - and just about the same as mine above, except I for some inexplicable reason included the 15 mins past job as a separate entity. Are there supposed to be commas in your version?

 

[nawlej]

NO. Sorry.....Lets try this one more time:

15-55/5 7 * * * <user> <cmd>
*/5 8-19 * * * <user> <cmd>


___________________________________
[morse]--... ...--[/morse], Eric.

 

[KenCunningham]

And is <user> <command> supposed to be su - user -c "<command>" if running as root?

This could run and run, but have a good day - I'm goin' home!!

 

[nawlej]

It would be:

15-55/5 7 * * * root cmd
*/5 8-19 * * * root cmd

Thats it.


___________________________________
[morse]--... ...--[/morse], Eric.

 

[Johnsf]

That works... thanks Im using pycron for Windows NT but the syntax stored in crontab is the same