How often does the scheduling command '0 *12 * * * ' execute its job?

The command '0 *12 * * *' is scheduled to execute at specific times based on the cron format. In this format, the fields represent minute, hour, day of the month, month, and day of the week.

In this case, '0' refers to the minute field, indicating that the job will run at the 0th minute (or the start) of the hour. The '12' in the hour field means that the job will run at the 12th hour (12 PM), and since there is no specification for another hour, this will not repeat within the hour. As a result, the job will execute at 12:00 PM every day.

While 'every 12 hours' might seem plausible, this particular syntax specifies a single hour (12 PM) each day instead of executing twice per day (at 12 AM and 12 PM, which would be needed for the 12-hour interval).

Thus, the command is correctly interpreted to run every day at noon, making 'every 12 hours' not a fitting interpretation in this context. The correct response, which specifies that it runs at noon daily, aligns perfectly with how cron jobs are interpreted.