In addition to being informative, they're also sometimes funny. I remember that the HP/UX tunefs man page said, "You can tune a filesystem, but you can't tune a fish."
As with many things in UNIX, the ability to tune a fish is implementation-dependent, and testing is recommended before using it in production on any given platform.
One of my favorite man pages is openbsd's scan_ffs. mainly because it contains this pearl of wisdom
The basic operation of this program is as follows:
1. Panic. You usually do so anyways, so you might as well get it over with. Just don't do anything stupid. Panic away from your machine. Then relax, and see if the steps below won't help you out.
