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Suspend of crontab temprorarily

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# 1  
Old 08-21-2009
Suspend of crontab temprorarily
Hello Friends,

I would like to find out if there is a way to suspend crontab script? I need to suspend the scheduling of crontab scripts in case of an alarm and when alarm ends need to start them again automaticaly, could you suggest me a method?

one of participiant of the forum with name aigles said:

To suppress all jobs from crontab :
Code:
crontab -l > cronfile.dat   # Save actual crontab file
crontab -r                  # Remove crontab file

To restore all jobs :
Code:
crontab < cronfile.dat

This is a solution but after restoring process could crontab reschedule the tasks?

Regards
# 2  
Old 08-21-2009
Yes , it will . I mean the crontab will start scheduling the tasks that are all suppose to execute at the current time.
# 3  
Old 08-21-2009
Quote:
Originally Posted by panyam
Yes , it will . I mean the crontab will start scheduling the tasks that are all suppose to execute at the current time.
Thanks for reply. After i restored tasks in crontab, tasks will be reloaded with same execution times, not different time right? And it might be really weird question but is there a way to set the execution times of crontab tasks automatically or cant we talk about automization when crontab is not alreadly in use?
# 4  
Old 08-21-2009
It depends on your operating system. If you are using GNU/Linux and it has anacron, this may not be the case.
# 5  
Old 08-21-2009
Im using Solaris10 T-1000, cron run, should read about it. thanks
# 6  
Old 08-21-2009
Quote:
To restore all jobs :
Code:

crontab < cronfile.dat
Why < ?
There is no need... the syntax is crontab <filename>
This said on solaris you remove your cronfile to desactivate the cron jobs and recall using your cronfile works fine,,, but I know some paranoďds who edit and comment out all entries....


All the best
# 7  
Old 08-21-2009
Thanks a lot VBE, things are clearer on my mind. Besides i can try things in test machines so if i get something very useful i will share it with all.

Regards
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