* * * * *
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First parameter- specify minute and range will vary from 0-59
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Second parameter- specify hours and range will vary from 0-11
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Third parameter- specify day and range will vary from 0-7 here 0 and 7 will be Sunday
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Fourth parameter- specify month and range will vary from 1-12
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Fifth parameter- specify year so here you can specify *
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If you specify 00 22 * * * it means your build will run daily @ 10 PM
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If you specify 50 * * * * it means your build will run daily 50 min after every hour
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If you specify 00 22 1 * * it means your build will run every Monday @ 10 PM
┌───────────── minute (0 - 59)
│ ┌───────────── hour (0 - 23)
│ │ ┌───────────── day of month (1 - 31)
│ │ │ ┌───────────── month (1 - 12)
│ │ │ │ ┌───────────── day of week (0 - 6) (Sunday to Saturday;
│ │ │ │ │ 7 is also Sunday on some systems)
│ │ │ │ │
│ │ │ │ │
* * * * * command to execute
Reference link Cron Wiki