> ## Documentation Index
> Fetch the complete documentation index at: https://bun-1dd33a4e-farm-084c10c9-docs-lifecycle-supported-scripts.mintlify.site/llms.txt
> Use this file to discover all available pages before exploring further.

# Read environment variables

Access the current environment variables with `process.env`.

```ts index.ts icon="https://mintcdn.com/bun-1dd33a4e-farm-084c10c9-docs-lifecycle-supported-scripts/R-wx9Y3U966sjHmG/icons/typescript.svg?fit=max&auto=format&n=R-wx9Y3U966sjHmG&q=85&s=760430b8f5b281b582b200836ae7fe1d" theme={null}
process.env.API_TOKEN; // => "secret"
```

***

Bun also exposes these variables as `Bun.env`, an alias of `process.env`.

```ts index.ts icon="https://mintcdn.com/bun-1dd33a4e-farm-084c10c9-docs-lifecycle-supported-scripts/R-wx9Y3U966sjHmG/icons/typescript.svg?fit=max&auto=format&n=R-wx9Y3U966sjHmG&q=85&s=760430b8f5b281b582b200836ae7fe1d" theme={null}
Bun.env.API_TOKEN; // => "secret"
```

***

To print all currently-set environment variables, run `bun --print process.env`.

```sh terminal icon="terminal" theme={null}
bun --print process.env
```

```txt theme={null}
BAZ=stuff
FOOBAR=aaaaaa
<lots more lines>
```

***

See [Environment variables](/runtime/environment-variables).