NVRAM(8) FreeBSD System Manager's Manual (powerpc) NVRAM(8)
NAME
nvram - display or modify contents of the EEPROM or NVRAM
SYNOPSIS
nvram -p
nvram [-d name] ... [name=value ...]
DESCRIPTION
The nvram utility provides an interface for displaying and changing the
system's configuration variables contained in EEPROM or NVRAM. In the
first synopsis form, all available configuration variables and their
current values are printed. In the second form, the variable selected by
name is either removed or its value is changed to the value following by
`=' sign.
The following options are available:
-d name
Delete the variable selected by name from the EEPROM or NVRAM.
The -d flag can be specified multiple times, in which case
multiple variables will be removed.
-p Print all available configuration variables and their current
values.
EXAMPLES
Print all available configuration variables and their current values:
nvram -p
Remove the variable named local-mac-address?:
nvram -d local-mac-address\?
Set the value of the local-mac-address? variable to "true":
nvram local-mac-address\?=true
Note that the `\' in the above examples is used to keep the shell from
interpreting the `?'.
Remove variables named foo and bar and set variable named baz to "100":
nvram -d foo -d bar baz=100
SEE ALSO
powermac_nvram(4)
HISTORY
The nvram utility first appeared in FreeBSD 7.0. It is inspired by the
Darwin/Mac OS X nvram utility.
AUTHORS
Maxim Sobolev <
[email protected]>
FreeBSD 14.1-RELEASE-p8 June 19, 2020 FreeBSD 14.1-RELEASE-p8