Wednesday, 10 December 2014

When Tuesday to Sunday Isn’t Tuesday to Sunday

The following examples are from NetApp Clustered ONTAP 8.2.1.

This is a funny one and did catch me out.

I create a cron schedule for 01:00 for every day of the week from Tuesday to Sunday, using the below syntax that looks correct:

::> cron create -name Tue-Sun -minute 0 -hour 1 -dayofweek Tue-Sun

But, when I do a cron show it’s actually done Sun-Tue:

::> cron show Tue-Sun
       Name: Tue-Sun
      Month: -
Day of Week: Sunday, Monday, Tuesday
        Day: -
       Hour: 1
     Minute: 0
Description: Sun-Tue@1:00

This is what I should have done:

::> cron create -name Tue-Sun2 -minute 0 -hour 1 -dayofweek Sun,Tue-Sat

::> cron show Tue-Sun2
       Name: Tue-Sun2
      Month: -
Day of Week: Sunday, Tuesday, Wednesday, Thursday, Friday, Saturday
        Day: -
       Hour: 1
     Minute: 0
Description: Sun,Tue-Sat@1:00

It’s simple to fix the original mistake:

::> cron modify -name Tue-Sun -dayofweek Sun,Tue-Sat

::> cron show Tue-Sun
       Name: Tue-Sun
      Month: -
Day of Week: Sunday, Tuesday, Wednesday, Thursday, Friday, Saturday
        Day: -
       Hour: 1
     Minute: 0
Description: Sun,Tue-Sat@1:00

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