consvar - Manipulate system firmware console environment
variables
/sbin/consvar [-v] [-nc] -g -s -l -a -d [variable]
[value]
Verbose mode. Prints out the system IDs used by firmware,
the current firmware revision, and information about the
process. Get the value of the specified console environment
variable. Set the value of the specified console
environment variable. List the values of all variables
supported by this platform that are not disabled. This is
similar to the show SRM console command. Save the values
of all environment variables to non-volatile storage. Setting
a variable with the -s option only updates the inmemory
copy of console environment variables. The save
process could take a long time on some platforms, so it is
recommended that the variables are saved after all set
operations have been performed. List the system and
exception database information. Do not perform value conversion.
Variables that contain device information have
an underlying console bootstring format. If this option
is used, consvar does not convert between the Tru64 UNIX
names for these devices, but accepts and displays the raw
values. The same goes for integer values which are converted
between strings and hexadecimal values.
Use the consvar command to get, set, list, and save console
environment variables available on SRM system
firmware. Some firmware versions on some platforms do not
comply with the Alpha SRM when dealing with certain variables,
or operations. To ensure UNIX functionality with
such firmware, an exception database is consulted and
these operations are disabled. By default, consvar accepts
and displays device values with Tru64 UNIX device names,
or their device special file names. The raw console bootstrings
can be used by providing the -nc option. For
information regarding the console environment variables,
please refer to the Alpha System Reference Manual.
Success. Failure.
To show the values of all available console variables,
enter: % consvar -l To get the value of the booted_dev
variable, enter: % consvar -g booted_dev
A message similar to the following will be displayed:
booted_dev = disk0 To set the value of
boot_dev, enter the device name of the required
boot device: % consvar -s boot_dev disk0
To save the values of the variables across system
resets, enter: % consvar -a If an operation fails,
you can find out if it is disabled by using the -v
option. For example, to see if the bootdef_dev
variable is disabled, enter: % consvar -v -g bootdef_dev
The exception database can be printed out
along with the status of the current platform's
console variable support by entering: % consvar -v
-d
Specifies the command path. Exception database.
Functions: getsysinfo(2), setsysinfo(2)
consvar(8)
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