# `once cache blob get`

Fetch blob bytes by content digest.

## Synopsis

```text
once cache blob get [OPTIONS] <DIGEST>
```

## Arguments

| Argument | Required | Description |
| --- | --- | --- |
| `<DIGEST>` | yes | Blob digest to fetch. |

## Options

| Flag | Value | Default | Description |
| --- | --- | --- | --- |
| `-o, --output` | `<OUTPUT>` |  | File to write. Defaults to stdout; use `-` for stdout. |