crontab: setup cronjob to run first wednesday of every month

Shell Programming and Scripting
1

Hi,

How to setup cronjob to run first wednesday of every month. Is there a way?

Thanks..

2

As far as I know cron by nature doesn't have such capability ,
You have to work around with some scripting

3

Yes the is are many...
You can start by selecting the day (Wednesday) and in the script for the job, start by a simple test : is day smaller than 8?

4

Try this to run wednesday of every month at 9:30 am.Pls reply whether it worked or not

30 09 * * WED your_script.sh

5

30 09 * * WED your_script.sh

This will run every wednesday of any month. I want cronjob should run on first wednesday only of every month...

Please tell me how?

6

Already answered...

7

Or executes all the 1,2,3,4,5,6,7 and test if day is Wednesday...

If you dont know howto write a such simple test, you should have posted to more appropriate forum (dummies)

8

Can you give the steps of how do it?

That wont work as cronjob will run first 7 days. But I want cronjob to run only once (wed) in a month..

9

Your cron if you have set on wednesdays will only run all wednesdays, the test is to execute if day is less than 8 (first week), else you execute on the first 7 days of the week and test if day is wednesday

10 
00  5 * * 3          /sm/cron/bin/yourplannedJob

will run every wednesday...
If you test for days less than 8, you are sure to be in the first week of the month