packer-cn/website/source/docs/commands/inspect.html.md

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---
layout: docs
sidebar_current: docs-commands-inspect
page_title: packer inspect - Commands
description: |-
The `packer inspect` command takes a template and outputs the various
components a template defines. This can help you quickly learn about a
template without having to dive into the JSON itself. The command will tell
you things like what variables a template accepts, the builders it defines,
the provisioners it defines and the order they'll run, and more.
---
# `inspect` Command
The `packer inspect` command takes a template and outputs the various components
a template defines. This can help you quickly learn about a template without
having to dive into the JSON itself. The command will tell you things like what
variables a template accepts, the builders it defines, the provisioners it
defines and the order they'll run, and more.
This command is extra useful when used with
[machine-readable output](/docs/commands/index.html) enabled. The
command outputs the components in a way that is parseable by machines.
The command doesn't validate the actual configuration of the various components
(that is what the `validate` command is for), but it will validate the syntax of
your template by necessity.
## Usage Example
Given a basic template, here is an example of what the output might look like:
```text
$ packer inspect template.json
Variables and their defaults:
aws_access_key =
aws_secret_key =
Builders:
amazon-ebs
amazon-instance
virtualbox-iso
Provisioners:
shell
```