cron and crontab are tools to run commands at scheduled times.

See:

• man cron
• man 5 crontab
• man 1 crontab

There are several GUIs available to help set up a cron job, see:

• linuxconf
• drakcronat -- may be new -- just noticed on cooker (14 Aug 2002)

There are some gotchas -- IIRC, the command to be run must be a valid command in a specific shell (or set of shells), and some "extensions" to a command will make it not valid.

cron sends an email to somebody (the user who owns the crontab) when a command has been dispatched (or successfully run??).

AFAICT, crontab seems to stand for CRON TABle, in other words, a table of commands for cron.

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• () RandyKramer - 14 Aug 2002
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