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63 lines
1.8 KiB
Markdown
63 lines
1.8 KiB
Markdown
---
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layout: page
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title: "Shell command"
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description: "Instructions on how to integrate Shell commands into Home Assistant."
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date: 2015-10-13 19:10
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sidebar: true
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comments: false
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sharing: true
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footer: true
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ha_category: Automation
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logo: home-assistant.png
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ha_qa_scale: internal
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---
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This component can expose regular shell commands as services. Services can be called from a [script] or in [automation].
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Shell commands aren't allowed for a camel-case naming, please use lowercase naming only and separate the names with underscores.
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[script]: /components/script/
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[automation]: /getting-started/automation/
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```yaml
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# Example configuration.yaml entry
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# Exposes service shell_command.restart_pow
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shell_command:
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restart_pow: touch ~/.pow/restart.txt
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```
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Configuration variables:
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- Alias for the command
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- Command itself.
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The commands can be dynamic, using templates to insert values for arguments. When using templates, shell_command runs in a more secure environment which doesn't allow any shell helpers like automatically expanding the home dir `~` or using pipe symbols to run multiple commands.
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Any service data passed into the service call to activate the shell command will be available as a variable within the template.
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`stdout` and `stderr` output from the command are both captured and will be logged by setting the [log level](/components/logger/) to debug.
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```yaml
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# Apply value of a GUI slider to the shell_command
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automation:
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- alias: run_set_ac
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trigger:
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platform: state
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entity_id: input_number.ac_temperature
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action:
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service: shell_command.set_ac_to_slider
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input_number:
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ac_temperature:
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name: A/C Setting
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initial: 24
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min: 18
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max: 32
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step: 1
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{% raw %}
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shell_command:
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set_ac_to_slider: 'irsend SEND_ONCE DELONGHI AC_{{ states.input_number.ac_temperature.state }}_AUTO'
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{% endraw %}
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```
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