> Where do the commands such as   statfs(2), fstatfs(2), getfsstat(2),
> getmntinfo(3), fstab(5),  live before being installed? (what set?) Or do
> these get installed as a package? (gnu or otherwise?)

In the OS itself (except for the last, which is in /etc). Lest you think this
is a facetious answer, the first four are library functions designed to be
used in C programs. /etc/fstab is an actual file, which describes your
system's filesystem layout.

In general, (1) denotes user-land commands, (2)/(3) functions of various
kinds for C, (5) denotes configuration file documentation, (6) denotes
games and (8) denotes administrator utilities and daemons. These are the
most common manual sections you will encounter, at least on BSD.

-- 
----------------------------- personal page: http://www.armory.com/~spectre/ --
 Cameron Kaiser, Point Loma Nazarene University * ckaiser@stockholm.ptloma.edu
-- I'm an amateur orthinologist. I just love word-botching. -------------------