cron job to run on 2-27 every month excluding Sundays

Iyyappan · 06-02-2014, 01:24 AM

Hi,

can some one guide how to schedule a cron to run between 2nd to 27th of every month except Sundays

Iyyappan · 06-02-2014, 01:39 AM

For week days

00 08 2-27 * 1-5 /usr/local/script.sh is this correct.... I do not have a test server to test it..

For week end

00 08 2-27 * 0 /usr/loca/script.sh

the above one is running all days between 2 - 27 and also running on sunday..

I want the script to run on every sunday only between 2 - 27..

eklavya · 06-02-2014, 04:09 AM

Try this

Quote:

00 08 2-27 * 1-6 * /usr/local/script.sh

It will run each month between date 2 & 27 except sundays.

Iyyappan · 06-02-2014, 04:15 AM

Quote:

Originally Posted by eklavya

00 08 2-27 * 1-6 * /usr/local/script.sh .

what does the last * mean

eklavya · 06-02-2014, 06:48 AM

Every year.

Iyyappan · 06-02-2014, 07:32 AM

For week end can u help me

00 08 2-27 * 0 /usr/loca/script.sh

the above one is running all days between 2 - 27 and also running on sunday..

I want the script to run on every sunday only between 2 - 27..

Habitual · 06-02-2014, 07:59 AM

http://www.openjs.com/scripts/jslibr...os/crontab.php
suggests:

Code:

*	8	2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27	*	1,2,3,4,5,6

but that, I believe can be shortened to

Code:

* 8 2-27 * 1-6

and another crontab site shows:

Code:

* 8 2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27 * 1,2,3,4,5,6 /path/to/script

But what if say, the 13th is a Sunday?

This raises the question, does every first day of the week occur on Sunday everywhere when view by "cal" output?
or is Sunday always "0" on all systems? Isn't this based on LOCALE?

and perhaps another example of forcing cron to do our will:
https://www.linuxquestions.org/quest...9/#post5178849

I am intrigued and confused.

Sorry, if that's not much help.

rknichols · 06-02-2014, 09:20 AM

cron cannot directly do what you are asking. When you specify something other than "*" for both day-of-month and day-of-week, the logical operation is to run the command when either one is satisfied. To exclude days or dates, your command string needs to include a test using the date command.

In a crontab, either 0 or 7 is Sunday. If you like your weeks to begin on Sunday, use 0-6. If your week begins on Monday, use 1-7.

Iyyappan · 06-03-2014, 03:05 AM

Quote:

Originally Posted by rknichols

To exclude days or dates, your command string needs to include a test using the date

ok then I need to write a script to check for sunday alone and execute it .. and also check that date is between 2 - 27

rknichols · 06-03-2014, 08:47 AM

You can do it right in the crontab line, as shown in the link that Habitual posted.

Code:

00 08 2-27 * * test $(date +\%w) -ne 0 && /usr/local/script.sh

Note that the "%" character is special in a crontab and needs to be escaped with a backslash.

Habitual · 06-03-2014, 09:56 AM

good stuff rk!

TB0ne · 06-03-2014, 10:42 AM

Quote:

Originally Posted by Iyyappan

Hi,
can some one guide how to schedule a cron to run between 2nd to 27th of every month except Sundays

There are different ways to do it, but there have been many, MANY threads on LQ about cron scheduling, and many more on Google with fairly complex answers. If you looked on LQ:
http://www.linuxquestions.org/questi...2/#post4654486

...you'd have found at least one example, with a fairly good explanation. Apply what's in there.

Iyyappan · 06-04-2014, 04:20 AM

thanks a lot ...