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Weblog:   Keeping FreeBSD up-to-date
Subject:   Cron jobs
Date:   2004-12-08 16:45:22
From:   cperciva
Just a note to anyone who might be tempted to run the above script from a cron job: "freebsd-update fetch" doesn't like being run from cron(8). This is deliberate -- after experiencing a few accidental distributed denial of service attacks from ntp-synchronized systems (e.g., 50 systems all fetching updates at exactly 3:00:00 AM), I added code to make sure this wouldn't happen again.


If you want to use a cron job, run "freebsd-update cron" instead (the manual page gives more details).