When an SCO OpenServer system is installed, many directories are created
automatically. The following figure shows a partial structure of a
UNIX root filesystem. (A full root filesystem would be too large to
show here.)
/
The root directory is the root of the filesystem
tree. Every directory is a subdirectory of root.
/bin and /usr/bin
These directories contain most of the UNIX system commands. Generally,
standard UNIX commands and applications are held in /bin,
whereas group-specific commands and applications, that is, those
used by a particular group of users, are held in
/usr/bin.
/dev
This directory contains all the special device files. Special device
files are access points to all the peripherals connected to the
system.
/etc
This directory contains many of the system configuration files and
system administration commands.
/unix
This file contains the UNIX kernel program. This program is loaded
into memory when the operating system starts up. It is the heart of
the SCO OpenServer system; for more information see
``The UNIX system kernel''.
/usr/lib
This directory contains many application library files.
/usr/spool
This directory is used by many commands for storing temporary files
or files in a queue.
/var/opt/
This directory contains storage sections.
See
``Creating a link to a directory''
for information about symbolic links and storage sections.
