Technical data

Customizing the Operating System

5.3 Modifying Login Command Procedures to Customize User Environments

in to a captive account, the process is terminated because the system

environment might not have been set up properly.

If you expect SYLOGIN.COM to cause an error, you must use either

SET NOON or ON ERROR commands, and explicitly exit the command

procedure with a successful status so that the user’s login command

procedure can be executed.

Each user creates and maintains a personal copy of the login command procedure

You might need to help users set up a personal copy of LOGIN.COM.

See Section 7.7.1 for a sample SYLOGIN command ﬁle and a sample

5.4 Customizing Startup Databases with SYSMAN

Startup databases contain information used to start up system software.

For example, STARTUP.COM uses information in a startup database named

STARTUP$STARTUP_VMS to start the OpenVMS operating system. It uses

information in a startup database named STARTUP$STARTUP_LAYERED

to start layered products. For more information about startup databases, see

Section 5.4.1.

You can use the STARTUP command of the System Management utility

(SYSMAN) to customize startup databases as follows:

• Display information in any startup database.

• Create a site-speciﬁc startup database.

• Add, modify, or remove elements in the layered product database or site-

speciﬁc database. (Compaq recommends that you do not modify the OpenVMS

startup database.)

The following sections describe these tasks.

Before performing these tasks, it helps to understand SYSMAN. For more

information about SYSMAN, see Section 2.3.1. You should also understand

startup databases, in particular, the layered product startup database. For

information, see Section 5.4.1 and Section 5.4.2.

5.4.1 Understanding Startup Databases

Three startup database ﬁles are provided with the operating system, in the

location deﬁned by the logical name SYS$STARTUP:

5–18 Customizing the Operating System