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at command to run every monday

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Top Forums Shell Programming and Scripting at command to run every monday
# 8  
Old 04-04-2011
At my last company we used "at" for some periodic jobs. The script would re-at itself as it ran. We found that the script should re-at itself as the first thing it does in case it dies early. This was not a great solution, but it mostly worked. We did it because the user insisted that her job must run every 10 days... exactly. Running it on days 1, 11, 21 of the month (or anything like that) would not do. Exactly every 10 days. Using "at" seemed like the path of least resistance.
# 9  
Old 04-05-2011
Depending on the cron version used it might even have been possible to use it, but yeah, this proves there's always an exception to a rule. However, for something so basic as "every monday" it simpler to use cron than at IMO.
# 10  
Old 04-05-2011
Quote:
The problem is i need to schedule a script to run on 16 servers and certain servers say that cron job doesn't exist,so we were asked to use at commands instead..
Can you expand on this statement giving examples and real error messages?
Because "at" uses the "cron" daemon there is no sense in using "at" for a weekly job when a normal cron is designed for the task.
Don't forget to specify the full pathname to a script if you want to run it from cron.
# 11  
Old 05-24-2011
There are two issues i have,
1. with the cron job we do not have access to this on all the 16 servers(as per our business client)
2. i need to use at command, but it runs as scheduled jus once.

the at command, i am using is
at 0030 <$QDM_BIN_DIR/OBE_schedule.ksh

Please help me wiht this, i tried using "everyday" and "today" keywords along with at command but dint work too..
# 12  
Old 05-24-2011
My solution would be to set your script as a start up application. Through the command date it can check the day, if Monday, let it run in a loop that checks every five minutes or so the time (through the command 'date' as well), if time is 11.30+-5 then break the loop and do whatever you want
# 13  
Old 05-24-2011
I'd think this to be a very strange client requirement that you can use at, but not cron...

But as said before, it is possible to do with at, you just have to re-schedule the next run at the end of the current run.

@hakermania: That would only be effective if the system was restarted every day, or if the same user logs in every day.
# 14  
Old 05-24-2011
Quote:
Originally Posted by pludi
I'd think this to be a very strange client requirement that you can use at, but not cron...

But as said before, it is possible to do with at, you just have to re-schedule the next run at the end of the current run.

@hakermania: That would only be effective if the system was restarted every day, or if the same user logs in every day.
Yes, I took for granted this fact
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