Installation guide

4
Customizing the System Environment
This chapter describes how you can customize your system environment in
the following areas:
• System initialization files, which you use to initialize and control the
system’s run levels
• National language directories, which you use to supply support for
language-specific and country-specific programs
• Internationalization features, which you tailor to support programmers
and users developing and running programs for international audiences
• System time zone directories and environment variables, which you use
to administer local and worldwide time zone information on your system
• System security tasks, which you employ to administer the security
policy of your organization
• Performance monitors, which you set up and use to measure diverse
aspects of system performance
• The Class Scheduler provides you with a method of controlling the
execution of tasks or applications, by restricting the length of time that
they can access the processor (CPU)
• Power manager elements, which you set up and use to control power
consumption in Energy Star-compliant peripherals and processors
4.1 Identifying and Modifying System Initialization Files
To define and customize the system environment, you modify certain
initialization files that specify and control processes and run levels. Tru64
UNIX provides you with default files that define the available run levels
and the processes associated with each run level. You can easily change or
customize the system environment by using these files as templates. In
addition, if you support internationalization standards, you must be
familiar with the structure and requirements of the corresponding files on
your system.
This section describes the Tru64 UNIX software and provides instructions
for identifying, using, and modifying the files that initialize and control the
Customizing the System Environment 4–1