Technical data

5
Customizing the Operating System
After you install the operating system, you can customize it for site-specific
requirements.
Information Provided in This Chapter
This chapter describes the following tasks:
Task Section
Adding and deleting optional files Section 5.1
Modifying site-specific startup command procedures Section 5.2
Modifying login command procedures Section 5.3
Customizing startup databases Section 5.4
†Registering images that have system version dependencies Section 5.5
Customizing the Help Message database Section 5.6
Customizing Mail Section 5.7
Setting up the Multipurpose Internet Mail Extension (MIME) utility Section 5.8
Saving your customization Section 5.9
†VAX specific
This chapter explains the following concepts:
Concept Section
Site-specific startup command procedures Section 5.2.1
The order of startup events Section 5.2.2
Startup databases Section 5.4.1
The layered product startup database Section 5.4.2
5.1 Adding and Deleting Optional Files
OpenVMS lets you customize the size of the operating system by deleting
or adding optional system files, including support for DECwindows. This is
particularly valuable for small systems or systems with limited disk space.
For example, if your system is a MicroVAX II computer with an RD54 system
disk and you will not use system programming features such as the Delta/XDelta
Debugger (DELTA/XDELTA) or the System Dump Analyzer utility (SDA), you
might remove these files from the system disk.
Customizing the Operating System 5–1