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# start

OTP start script example for Unix.

## Description

The `start` script is an example script on how to start up the Erlang system in
embedded mode on Unix.

For more information about the use, see the
[Embedded System User's Guide](`e:system:embedded.md`) in System
Documentation.

```text
start [ data_file ]
```

Argument:

- **`data_file`** - Optional. Specifies what `start_erl.data` file to use.

Environment variable `RELDIR` can be set before calling this example, which sets
the directory where to find the release files.

## See Also

[`run_erl(1)`](run_erl_cmd.md), [`start_erl(1)`](start_erl_cmd.md)