知らなかったそんなの•••

http://slashdot.jp/story/02/08/27/1034257/NetBSD%E3%81%8C%E5%85%A8%E3%81%A6%E3%81%AEexecutable%E3%82%92dynamic-link%E3%81%AB
を読んで
>というか /sbin は system programs and adiministration utilities を おく場所ですよ? see hier(7)

HIER(7)                      BSD Reference Manual                      HIER(7)

NAME
     hier - layout of filesystems

DESCRIPTION
     A sketch of the filesystem hierarchy.

     /        root directory of the filesystem

     /boot    executable that loads /bsd; /boot is loaded by the block 0 boot-
              strap

     /bsd     pure kernel executable (the operating system loaded into memory
              at boot time by /boot)

...
HISTORY
     A hier manual page appeared in Version 7 AT&T UNIX.

BSDI BSD/OS                      June 5, 1993                                4

A hier manual page appeared in Version 7 AT&T UNIX.
ずいぶん古いな。昔の人もディレクトリの使用方法に悩んだのかしら？