How to create cron job automatically?


 
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Old 04-26-2006
How to create cron job automatically?

How do I write a perl script to get the cron jobs? I could do a

perl -e ' system "crontab -l > jobs.txt " ';

Is there a better way?

Then I can use perl to make changes to jobs.txt. How can I submit the changes.

I suppose I could use system "crontab jobs.txt", is there a better way?

Thanks,
Siegfried
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atrm(1) 							   User Commands							   atrm(1)

NAME
atrm - remove jobs spooled by at or batch SYNOPSIS
atrm [-afi] [ [ job #] [user...]] DESCRIPTION
The atrm utility removes delayed-execution jobs that were created with the at(1) command, but have not yet executed. The list of these jobs and associated job numbers can be displayed by using atq(1). atrm removes each job-number you specify, and/or all jobs belonging to the user you specify, provided that you own the indicated jobs. You can only remove jobs belonging to other users if you have solaris.jobs.admin privileges. OPTIONS
The following options are supported: -a All. Removes all unexecuted jobs that were created by the current user. If invoked by the privileged user, the entire queue will be flushed. -f Force. All information regarding the removal of the specified jobs is suppressed. -i Interactive. atrm asks if a job should be removed. If you respond with a y, the job will be removed. FILES
/var/spool/cron/atjobs spool area for at jobs ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Availability |SUNWcsu | +-----------------------------+-----------------------------+ SEE ALSO
at(1), atq(1), auths(1), cron(1M), auth_attr(4), attributes(5) SunOS 5.10 13 Aug 1999 atrm(1)