Quote:
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Originally Posted by doctorow
On FreeBSD: FreeBSD is developed as an integrated system, with a kernel matching userland tools. For instance, one should not run a kernel compiled for FreeBSD 5.3 RELEASE on a CURRENT machine. The kernel and all userland utilities are meant to be upgraded simultaneously, and must be kept synchronized.
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This isn't exactly true. You can (and many do), upgrade their kernels
only without building the world target every time to rebuild userland. You
should keep them in lockstep, but there are very specific cases where you
never want to upgrade userland when you upgrade kernels, lest you risk stability of your existing userland.