Specifications

Table 10-3. Environment Variables Set by the User
boot
1
Specifies the default arguments for the boot command.
console
1
Controls the choice of the system console. If you specify any
value other than s, the system rom the console. If you specify
s, the system uses a terminal connected to the system module.
Setting console causes the system to immediately reconfigure
and initialize the system console.
haltaction
1
Specifies system halt actions:
b causes the system to perform a boot command.
h causes the system to halt (accept command from the
console).
r causes the system to perform a restart operation or, if
that fails, to perform a boot operation.
more Contains the screen size. If more is nonzero, the system
paginates all command output using the value as the page
size.
osconsole Contains the slot numbers of the console driver(s). If a tty
driver from slot x is used as the console, osconsole is set to
x. If a crt driver from slot y and a kbd driver from slot z are
used as the console, osconsole is set to y,z.
This environment variable is not a standard system
environment variable.
testaction
1
Controls the power-up self-test behavior:
t specifies a thorough (but slow) testing of the system.
q specifies a quicker but less thorough testing.
m specifies manufacturing-specific tests.
# Contains the number of the module that contains the current
script. If no script is active, the base system module is
assumed.
1
Environment variables preserved in nonvolatile memory.
Additional environment variables can be set as implementation
specific side effects of various bootstrap and test procedures.
Using the Console Program 10–19