Tagged Questions

0
votes
1answer
54 views

Simple Linux-based task scheduler with job dependencies?

I'm maintaining a data-warehousing system that involves a lot of dependent jobs (data import, transform, etc). I've been using Linux's crontab to manage them until the dependency between jobs get ...
0
votes
1answer
334 views

scheduling jobs on mac OSX 10.8.2

I am trying to schedule the execution of a .sh script on max OSX 10.8.2 I am using crontab and am getting an odd bug. If i am at the computer and set the task so that it executes in the next few ...
0
votes
1answer
41 views

How does scheduling work?

How do programs designed for scheduling (e.g. Task Scheduler in Windows, cron in Unix systems) know that it "is time" for them to run a certain scheduled command or script? I imagine it's not ...
4
votes
2answers
652 views

Should I worry about Daylight saving time when planning to schedule backups?

So if there is a day: https://secure.wikimedia.org/wikipedia/en/wiki/Daylight_saving_time when we have to e.g.: set our clock back from 3am to 2am. Ok. So if someone creates a cron job at 3am, ...
0
votes
3answers
88 views

Free app to run task of visiting a url

I need to run an .asp webpage on my site every 40 minutes. Does anyone recommend a free web-based app that I can enter in my url and it will visit the url every 30 - 60 mins? preferably one without ...
4
votes
9answers
885 views

How can I write a cron job that will block my internet from 7pm to 7am? (So I can get some sleep)

I am using OSX 10.6 and it has cron built in. How can I write a cron job that will block my internet from 7pm to 7am every day? Im sure this must be simple but I could only find one example online ...
5
votes
3answers
2k views

Run Linux script at time 'n' on first day, 'n+15 mins' next day, and so on

I'm trying to take timelapse images using my webcam. What I want to do is run a script at midnight on 1st Jan, then 00:15 on 2nd Jan, 00:30, 3rd Jan and so on. This can keep running forever, I'll ...
1
vote
1answer
222 views

Having trouble running a cron job in Unix which generates a dynamic filename for an output data dump

I am trying to schedule a MySQL database dump by using cron but I get an error for some code that I know works when I call directly in Shell. Here is the code that works perfectly well in Shell: ...
1
vote
3answers
710 views

What's wrong with my cron job time schedule?

I'm trying to setup cron jobs for a website hosted on hostmonster.com. When I use the following it runs perfectly: * * * * * But whenever I make changes to these timestamps the script doesn't ...