Crontab

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Crontab syntax

A crontab file has five fields for specifying time, date and day followed by the command to be run at that interval.

*   *   *   *   *  command to be executed
-   -   -   -   -
|   |   |   |   |
|   |   |   |   +----- day of week (0 - 6) (Sunday=0)
|   |   |   +------- month (1 - 12)
|   |   +--------- day of month (1 - 31)
|   +----------- hour (0 - 23)
+------------- min (0 - 59)

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