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Slightly restructure page and improve grammar (#11011)

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Antoni K 2019-11-04 17:35:43 +08:00 committed by Fabian Affolter
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source/_docs/configuration/yaml.markdown
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@ -6,8 +6,9 @@ redirect_from: /getting-started/yaml/
Home Assistant uses the [YAML](https://yaml.org/) syntax for configuration. YAML might take a while to get used to but is really powerful in allowing you to express complex configurations.
For each integration that you want to use in Home Assistant, you add code in your `configuration.yaml` file to specify its settings.
The following example entry specifies that you want to use the [notify component](/integrations/notify) with the [pushbullet platform](/integrations/pushbullet).
For integrations that you want to use in Home Assistant, you add code in your `configuration.yaml` file to specify its settings. This especially applies to integrations that are not yet available to configure through the UI.
The following example entry assumes that you would like to set up the [notify component](/integrations/notify) with the [pushbullet platform](/integrations/pushbullet).
```yaml
@ -30,14 +31,14 @@ You can use the online service [YAMLLint](http://www.yamllint.com/) to check if
<div class='note'>
Please pay attention on not storing private data (passwords, API keys, etc.) directly in your `configuration.yaml` file. Private data can be stored in a [separate file](/docs/configuration/secrets/) or in [environmental variables](/docs/configuration/yaml/#using-environment-variables), which circumvents this problem of security.
Please pay attention to not storing private data (passwords, API keys, etc.) directly in your `configuration.yaml` file. Private data can be stored in either a [separate file](/docs/configuration/secrets/) or in [environmental variables](/docs/configuration/yaml/#using-environment-variables), which circumvents this security problem.
</div>
Text following a `#` are comments and are ignored by the system.
Strings of text following a `#` are comments and are ignored by the system.
The next example shows an [input_select](/integrations/input_select) integration that uses a block collection for the options values.
The other properties (like name) are specified using mappings. Note that the second line just has `threat:` with no value on the same line. Here threat is the name of the input_select and the values for it are everything nested below it.
The next example shows an [input_select](/integrations/input_select) integration that uses a block collection for the values of options.
The other properties (like `name:`) are specified using mappings. Note that the second line just has `threat:` with no value on the same line. Here threat is the name of the input_select and the values for it are everything nested below it.
```yaml
input_select:
@ -62,16 +63,17 @@ sensor:
state_topic: sensor2/topic
```
## Using Environment Variables
## Including values
You can include values from your system's environment variables with `!env_var`.
### Environmental variables
You can include values from your system's environment variables with `!env_var`. Note that this will only work in a scenario where it is possible to specify these. Hass.io users are recommended to use `!include` statements instead.
```yaml
http:
api_password: !env_var PASSWORD
```
### Default Value
#### Default value
If an environment variable is not set, you can fallback to a default value.
@ -80,7 +82,7 @@ http:
api_password: !env_var PASSWORD default_password
```
### Including Separate Files
### Including entire files
To improve readability, you can source out certain domains from your main configuration file with the `!include`-syntax.