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How to stop cronjob automatically after cron process get completed?

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# 1  
Old 03-26-2017
Blade How to stop cronjob automatically after cron process get completed?
Hi ,
I have scheduled the script using cron between 25-31 of the month.

My script will trigger the ETL job once file is available in Windows path between these days(every 2 hours between 26 - 30 of every month ).

So my question : "if the ETL job completes cron should stop the running the script. (i.e., if the ETL job completed on 26th after that cron should stop running the script for 2 hours of rest of the days)"

Is the any way can do ?

Please help
# 2  
Old 03-26-2017
Put a line in the job right at the end to write out a timestamp file somewhere. The existence of this file indicates that the required processing has already been done. Put in a line at the beginning of the job to check for the existence of a timestamp file and, if it exists, end the job without doing anything.

Schedule another cron job to run, say, the 4th of the month to delete the timestamp file so that things will run later in that month.
This User Gave Thanks to hicksd8 For This Post:
MadeInGermany
# 3  
Old 03-28-2017
How have you written the cron entry? It is possible that you will have it run every day from 25th to 31st inclusive.

Please paste the cron record in CODE tags.



Robin
# 4  
Old 03-29-2017
Code:
00 14 25-31 * * /path/script/shell.sh

Moderator's Comments:
Mod Comment Please use CODE tags as required by forum rules!
Last edited by RudiC; 03-29-2017 at 01:40 PM.. Reason: Added CODE tags.
# 5  
Old 03-29-2017
That will NOT run every 2 hours, but at 2pm for 7 days.
# 6  
Old 03-29-2017
Following the suggestion from hicksd8
Code:
00 */2 25-31 * * /path/script/shell.sh && >/tmp/shell.sh.lockfile

and have another cron job
Code:
00 14 24 * * rm -f /tmp/shell.sh.lockfile

The && does the lockfile only if the shell.sh exited happily (zero exit status).
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