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Solaris™ 8 System Administrator Exam Cram™ 2 (Exams CX-310-011 and CX-310-012) by Darrell L. Ambro

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Scheduling Processes

Two commands are available for scheduling automatic execution of processes: cron(1M) and at(1).

The cron Command

The cron command is a daemon started during system boot. It is responsible for executing commands at a future time and perhaps periodically on a scheduled basis. The commands to be executed are specified in a standardized tabular format and stored in files referred to as crontab files. These files are located under the /var/spool/cron/crontabs directory.

Commands that are executed automatically by being placed in a crontab file are referred to as cron jobs. Commands to be executed only once at a future time can be submitted by using the at command instead of modifying the crontabs. The at command is described in ...

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