tss2_nvread(1)

tss2_nvread1

Usage

tss2_nvread [OPTIONS]

Overview

tss2_nvread(1) - This command reads the entire data from an NV index of the TPM.

Options

These are the availabe options:

•

-f, --force:

Force overwriting the output file.

•

-o, --data=FILENAME or - (for stdout):

Returns the value read from the NV space.

•
-p, --nvPath=STRING:

Identifies the NV space to read.

•

-l, --logData=FILENAME or - (for stdout):

Returns the JSON encoded log, if the NV index is of type “extend” and an empty string otherwise. Optional parameter.

Options

This collection of options are common to all tss2 programs and provide information that many users may expect.

•

-h, --help [man|no-man]: Display the tools manpage. By default, it attempts to invoke the manpager for the tool, however, on failure will output a short tool summary. This is the same behavior if the “man” option argument is specified, however if explicit “man” is requested, the tool will provide errors from man on stderr. If the “no-man” option if specified, or the manpager fails, the short options will be output to stdout.

To successfully use the manpages feature requires the manpages to be installed or on MANPATH, See man(1) for more details.

•

-v, --version: Display version information for this tool, supported tctis and exit.

Examples

tss2_nvread --nvPath=/nv/Owner/myNV --data=data.file

Returns

0 on success or 1 on failure.

Help

See the Mailing List ⟨https://lists.linuxfoundation.org/mailman/listinfo/tpm2⟩\c

Releases

3 releases since Debian 12 (Bookworm); the text changed 2 times.

  1. 12
  2. 13
  3. Arch

Bugs

Github Issues ⟨https://github.com/tpm2-software/tpm2-tools/issues⟩\c

License

This work is licensed under the Creative Commons Attribution 4.0 International License (CC BY 4.0) ⟨https://creativecommons.org/licenses/by/4.0/⟩\c .

From tpm2-tools 5.8-1 in Arch Linux 2026-11-01. Parsed by carta from the page's man source.