# snapdir id

Print the manifest ID of a directory or a manifest piped via stdin.

The ID is the content address of the snapshot: the same tree always yields the
same ID. See [Content addressing](../concepts/content-addressing.md).

## Usage

```text
snapdir id [OPTIONS] [PATH]
```

### Arguments

| Argument | Description |
| --- | --- |
| `[PATH]` | Directory to describe (omit to read a manifest from stdin). |

### Options

`id` accepts the [global options](overview.md#global-options), notably
`--checksum`, `--exclude`, and `--paths`.

## Examples

Print the ID of a directory:

```console
snapdir id ./project
```

Pipe a manifest in to compute its ID without re-walking the tree:

```console
snapdir manifest ./project | snapdir id
```

## See also

- [`snapdir manifest`](snapdir-manifest.md) — produce the manifest the ID is computed from
- [Content addressing](../concepts/content-addressing.md)