---
name: "ao-usbtrng"
section: "1"
platform: "linux"
package: "altos"
version: "1.9.21-1"
release: "Debian 13 (Trixie)"
platforms: ["linux"]
url: "https://new.carta.tech/ao-usbtrng"
---

# ao-usbtrng(1)

dump random numbers from USBtrng

## NAME

ao-usbtrng - dump random numbers from USBtrng

## SYNOPSIS

**ao-usbtrng \[OPTION...\] \[KBYTES\]**

## DESCRIPTION

*ao-usbtrng* dumps random numbers from a USBtrng device. If provided KBYTES specifies the number of 1024 byte blocks to produce on standard output. Without KBYTES *ao-usbtrng* produces random bytes continuously until killed.

## OPTIONS

- \-v, --verbose

  increase verbosity

- \-T, -tty=TTYDEVICE

  This selects which tty device the debugger uses to communicate with the target device. The special name 'BITBANG' directs ao-dbg to use the cp2103 connection, otherwise this should be a usb serial port connected to a suitable cc1111 debug node.

- \-D, --device=ALTOSDEVICE

  Search for a connected device. This requires an argument of one of the following forms:

-

  usbtrng:2\
   usbtrng\
   2

-

  Leaving out the product name will cause the tool to select a suitable product, leaving out the serial number will cause the tool to match one of the available devices.

## USAGE

*ao-usbtrng* opens the target device and reads the specified number of KBYTES of random data.

## AUTHOR

Keith Packard