Restart cron entry, Uses of the restart cron entry – Gasboy CFN III Mgnr's Mnl V3.4 User Manual

Page 223

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MDE-4315 CFN Series CFN III Manager’s Manual for Windows NT · August 2004

Page 207

Automatic Cron Commands

The time field is right justified, which means that it is read by the Site
Controller from the right, not from the left. That is, if you do not care about one
or more of the left-most time intervals, you do not have to specify them.

An ** also means you do not care about that time interval. For example,
@01********00 means every hour on the hour on Sundays, @1200 means at
12:00 noon every day, and @01**0400 means at 4:00AM on the first of every
month.

Restart cron Entry

A cron entry that begins with an exclamation mark (!) will be executed in the
event of a system crash. The format of a restart cron entry is:

! [-]command

The exclamation mark is all that is needed to specify this condition. Remember
to leave a space between the exclamation mark and the command. There should
be only one restart cron entry. If there is more than one restart cron entry, only
the first one will be executed.

The optional hyphen (-) before the command name suppresses output to the
printer. This allows the command to execute while someone is logged on to the
command terminal. Will display RESTART in the When column of P CR
output.

Uses of the Restart cron Entry

System crashes are unlikely and should be reported to your field service
representative. You can use restart cron to save diagnostic information after a
crash. Then you can restart the site without taking the chance of losing
information that could help your service technician diagnose the cause of the
crash.

Below is an example of a restart command file to use with cron. This
command-file example appends the diagnostic reports to the end of a file called
CRASH.LOG, which can be inspected or printed later.

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