Installation guide

3 The DIGITAL UNIX directory structure contains the /home directory,
intended as a root for users’ home directories. However, on DIGITAL
UNIX systems, the home directories for most users are subdirectories
of the /usr/users directory, which is the default location for adding a
user (typically, with the adduser command). The actual location of
user subdirectories is at the discretion of the system administrator.
4 The /lib directory is a link to the /usr/lib directory. In addition,
the /usr/lib directory contains links to libraries stored in the
/usr/ccs/lib directory.
5 The /sbin directory contains the set of executables required to boot
and initialize the system successfully in single-user mode. When you
are in single-user mode, you can use only the commands in the /sbin
directory because shared libraries are unavailable. The commands in
the /sbin directory are not linked with shared libraries.
_____________________ Note _____________________
The /sbin directory contains only a subset of the
commands that are available on an ULTRIX single-user
mode system. You can do less on a DIGITAL UNIX system
from single-user mode than you can on an ULTRIX system.
6 The /sys directory is a link to the /usr/sys directory.
7 The /usr/bin directory contains binaries and links to binaries in
other directories, such as /usr/ccs/bin.
8 The /usr/sbin directory contains commonly used system
administration commands. The commands in this directory are linked
with shared libraries. When the system is in multiuser mode, you
should use the commands in /usr/sbin directory, rather than the
commands in the /sbin directory.
9 The /usr/ucb directory is a link to the /usr/bin directory on
DIGITAL UNIX systems.
4.8.2 Differences in Creating a UNIX File System
To create a UNIX File System (UFS) on a DIGITAL UNIX system, you use
the newfs command. This command builds a new file system on a specific
device, using information in the disk label as its default values. If there is
no disk label, newfs uses information from the /etc/disktab file.
DIGITAL recommends that you create disk labels with the disklabel
command before running the newfs command. (See disklabel
(8) for more
information.) You can specify options to redefine the standard sizes for the
disk geometry.
Overview of DIGITAL UNIX System and Network Administration 4–11