reads data from an NVRAM area and either displays them or
writes them into a file. The user must provide the index of the NVRAM area. If
the user provided the number of bytes to read then this will be the maximum
number of bytes that will be read from the NVRAM area, otherwise the whole
NVRAM area will be read. Some NVRAM areas only allow read sizes of zero, i.e.,
NVRAM area with index 0. Optionally an offset into the NVRAM area can be given
where the reading of the data is to start. If the NVRAM area has permission
bits set that require owner or NVRAM area authentication, then the password
must be provided via the password option.
The following options are supported:
- -h, --help
- Display command usage info.
- -v, --version
- Display command version info.
- -l, --log [none|error|info|debug]
- Set logging level.
- -u, --unicode
- Use TSS UNICODE encoding for passwords to comply with
applications using TSS popup boxes
- -z, --well-known
- Use a secret of all zeros (20 bytes of zeros) as either the
NVRAM area or owner secret.
- -p, --password
- Depending on what type of authentication is required for
the NVRAM area, this must either be the NVRAM area or owner password.
A password may be directly provided for example by using
'--password=password' or '-ppassword'. If no password is provided then the
program will prompt the user for the password.
- -i, --index
- The index of the NVRAM area. The parameter may either be a
decimal number or a hexadecimal number starting with '0x'.
- -s, --size
- The number of bytes to read from the NVRAM area. The
parameter may either be a decimal number or a hexadecimal number starting
- -n, --offset (optional parameter)
- The offset into the NVRAM area from where to start reading.
The parameter may either be a decimal number or a hexadecimal number
starting with '0x'.
- -f, --filename (optional parameter)
- The name of a file the read data will be written into. If
no filename is given the data will be printed to stdout.
Report bugs to <firstname.lastname@example.org>