# snapdir verify

Verify the integrity of a staged snapshot.

`verify` re-checks the objects of a staged snapshot against the checksums in its
manifest, confirming nothing in the cache has drifted. See
[Integrity](../concepts/integrity.md).

## Usage

```text
snapdir verify [OPTIONS]
```

### Options

`verify` takes no positional arguments. It accepts the
[global options](overview.md#global-options); the most relevant are `--id`
(snapshot to verify), `--cache-dir`, and `--purge` (drop objects with invalid
checksums).

## Examples

Verify a staged snapshot by ID:

```console
snapdir verify --id 1220abc...
```

Verify and purge any objects that fail their checksum:

```console
snapdir verify --id 1220abc... --purge
```

## See also

- [`snapdir verify-cache`](snapdir-verify-cache.md) — verify the whole cache
- [`snapdir stage`](snapdir-stage.md) — create a staged snapshot
- [Integrity](../concepts/integrity.md)