# `bird update`

## Usage

```bash
bird update [flags]
```

## Description

Download and install the latest bird CLI release.

Fetches the latest version, verifies the SHA256 checksum, and atomically
replaces the running binary. --check reports whether a newer version exists
without installing anything. Set BIRD_CDN_BASE to point at a different artifact
host.

## Examples

```bash
bird update
bird update --check
sudo bird update   # if installed under /usr/local/bin
```

## Options

| Name      | Description                                                    |
| --------- | -------------------------------------------------------------- |
| `--check` | Report whether a newer version is available without installing |