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Absolute FreeBSD, 2nd Edition by Michael W. Lucas

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Chapter 13. UPGRADING FREEBSD

UPGRADING FREEBSD

Upgrading network servers is perhaps the most annoying task in the system administrator's routine. I can manage unexplained behavior on my desktop after an upgrade, but when a whole company or hundreds of customers depend on one system, even thinking of touching that system makes my bowels churn. Any operating system upgrade can expand your burgeoning gray hair collection. Even very experienced system administrators, faced with a choice between upgrading a system in-place and jabbing red-hot needles into their own eyes, frequently have to sit down and consider their choices. While a few Unix-like systems have straightforward ...

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