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Is it possible to run a single cron expression that will execute the job every 30 minutes, starting at 9AM tomorrow for example? (from tomorrow at 9 i need it to run forever every 30 minutes). Is that possible? If not, is it possible to do this without date, only start hour?

axelrod
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1 Answers1

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This will run a Perl script every 30 minutes indefinitely:

*/30 * * * * /usr/bin/perl /path-to-file/file.pl

According to the top answer of this question, there is no syntax that enables perpetual running with a specific start time.

Community
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Alex A.
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  • Thanks for your answer, the thing is, i need a start time for this interval, i don't want it to start immediately. – axelrod Nov 27 '13 at 21:12
  • @axelrod: I updated my answer to reference another Stack Overflow question similar to yours. – Alex A. Nov 27 '13 at 21:30