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% tss2_getrandom(1) tpm2-tools | General Commands Manual
%
% APRIL 2019
# NAME
**tss2_getrandom**(1) -
# SYNOPSIS
**tss2_getrandom** [*OPTIONS*]
[common fapi references](common/tss2-fapi-references.md)
# DESCRIPTION
**tss2_getrandom**(1) - This command uses the TPM to create an array of random bytes.
# OPTIONS
These are the available options:
* **-n**, **\--numBytes**=_INTEGER_:
The number of bytes requested by the caller.
* **-f**, **\--force**:
Force overwriting the output file.
* **-o**, **\--data**=_FILENAME_ or _-_ (for stdout):
The returned random bytes.
* **\--hex**
Convert the output data to hex format without a leading "0x".
[common tss2 options](common/tss2-options.md)
# EXAMPLE
```
tss2_getrandom --numBytes=20 -data=- | hexdump -C
```
# RETURNS
0 on success or 1 on failure.
[footer](common/footer.md)
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