jnc probe

Detects NVIDIA Jetson hardware on the current system and reports a detailed hardware profile. Use this command to verify that your Jetson device is recognized correctly before setting up workspaces, configuring system requirements, or troubleshooting platform-specific issues.

Usage

jnc probe [OPTIONS]

Options

Option	Default	Description
`--json`	`true`	Output results in JSON format

Output

When Jetson hardware is detected, the command outputs a JSON object containing a JetsonProfile with the following fields:

Field	Type	Description	Example
`arch`	String	CPU architecture of the system	`"aarch64"`
`l4t`	String or null	Linux for Tegra (L4T) version. Queried from the `nvidia-l4t-core` dpkg package on JetPack 6+, or read from `/etc/nv_tegra_release` on older releases	`"36.4.0"`
`jetpack`	String or null	NVIDIA JetPack SDK version corresponding to the installed L4T release	`"6.1"`
`cuda`	String or null	CUDA driver version. Read from `/proc/driver/nvidia/version`, falling back to `nvidia-smi` if unavailable	`"12.2"`
`module`	String or null	Jetson module name, read from `/proc/device-tree/model`	`"Jetson Orin Nano"`
`compute_capability`	String or null	CUDA compute capability of the GPU	`"8.7"`

Fields shown as “String or null” will be null in the JSON output when the value cannot be determined (for example, when the corresponding file or package is not present).

Supported Hardware

Currently supports the Jetson Orin Nano with JetPack 6 (L4T R36.x). Support for additional Jetson modules and JetPack versions is coming soon.

Examples

Jetson Orin Nano

jnc probe

{
  "arch": "aarch64",
  "l4t": "36.4.0",
  "jetpack": "6.1",
  "cuda": "12.2",
  "module": "Jetson Orin Nano",
  "compute_capability": "8.7"
}

Non-Jetson System

On a system without Jetson hardware, the command returns a profile with null values for hardware-specific fields:

jnc probe

{
  "arch": "x86_64",
  "l4t": null,
  "jetpack": null,
  "cuda": null,
  "module": null,
  "compute_capability": null
}

Integration with System Requirements

You can use the L4T version reported by jnc probe to configure system requirements in your jnc.toml. This ensures that packages requiring a specific L4T release are resolved correctly:

[system-requirements]
l4t = "36.4.0"

Run jnc probe first to confirm the L4T version on your device, then set the value in jnc.toml to match.

Overview

Commands

jnc probe

jnc probe

Usage

Options

Output

Supported Hardware

Examples

Jetson Orin Nano

Non-Jetson System

Integration with System Requirements

​jnc probe

​Usage

​Options

​Output

​Supported Hardware

​Examples

​Jetson Orin Nano

​Non-Jetson System

​Integration with System Requirements

jnc probe

Usage

Options

Output

Supported Hardware

Examples

Jetson Orin Nano

Non-Jetson System

Integration with System Requirements