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Home > Success Center > Network Configuration Manager (NCM) > NCM 7.7 Administrator Guide > References > Create a CRON expression

Create a CRON expression

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Created by Anthony.Rinaldi_ret, last modified by Anthony.Rinaldi_ret on Feb 13, 2017

Views: 25 Votes: 0 Revisions: 2

In Unix computing, the CRON daemon performs all scheduled jobs. Each job is defined in a command line syntax that looks like this:

{Minutes: 0-59} [Hours: 0-23] {Day of Month: 1-31}{Month: 1-12}{Day of Week: 0-6 (Sunday to Saturday)} {Command to Execute}

NCM adopts this model in the resource of the advanced schedule type. The five input fields correspond to the five elements of CRON job syntax. Additionally, NCM supports these CRON operators:

Symbol Name Description
* Asterisk The wildcard for the value all
- Hyphen Sets a range: #-#
, Comma Specifies terms out of series

Example

If want a job to run twice a week every month at midnight on Sunday and Thursday morning, the values for the fields would be:

0 0 * * 0, 4 {Command}

This tells NCM to run the job at 0 minutes and 0 hours, on all valid days of month, in all valid months, on Sunday and Thursday.

 

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