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Add 'Reading environment variables' section #469

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May 31, 2022
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Add 'Reading environment variables' section #469

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9 changes: 9 additions & 0 deletions book/environment.md
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Expand Up @@ -65,6 +65,15 @@ See [Defining environment from custom commands](environment.md#defining-environm

See [Modules](modules.md) for details.

## Reading environment varibles

Individual environment variables are fields of a record that is stored in the `$env` variable and can be read with `$env.VARIABLE`:

```
> $env.FOO
BAR
```

## Scoping

When you set an environment variable, it will be available only in the current scope (the block you're in and any block inside of it).
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