home-assistant.io/source/_components/command_line.markdown

title	description	logo	ha_category	ha_release	ha_iot_class	redirect_from
Command line Binary Sensor	Instructions on how to integrate Command binary sensors within Home Assistant.	command_line.png	Utility	0.12	Local Polling	/components/binary_sensor.command_line/

The command_line binary sensor platform issues specific commands to get data.

Configuration

To use your Command binary sensor in your installation, add the following to your configuration.yaml file:

# Example configuration.yaml entry
binary_sensor:
  - platform: command_line
    command: 'cat /proc/sys/net/ipv4/ip_forward'

It's highly recommended to enclose the command in single quotes ' as it ensures all characters can be used in the command and reduces the risk of unintentional escaping. To include a single quote in a command enclosed in single quotes, double it: ''.

{% configuration %} command: description: The action to take to get the value. required: true type: string name: description: Let you overwrite the name of the device. required: false type: string default: "name from the device" device_class: description: Sets the class of the device, changing the device state and icon that is displayed on the frontend. required: false type: string payload_on: description: The payload that represents enabled state. required: false type: string default: ON payload_off: description: The payload that represents disabled state. required: false type: string default: OFF value_template: description: Defines a template to extract a value from the payload. required: false type: string scan_interval: description: Defines number of seconds for polling interval. required: false type: integer default: 60 command_timeout: description: Defines number of seconds for command timeout. required: false type: integer default: 15 {% endconfiguration %}

Examples

In this section you find some real-life examples of how to use this sensor.

SickRage

Check the state of an SickRage instance.

# Example configuration.yaml entry
binary_sensor:
  - platform: command_line
    command: 'netstat -na | find "33322" | find /c "LISTENING" > nul && (echo "Running") || (echo "Not running")'
    name: 'sickragerunning'
    device_class: moving
    payload_on: "Running"
    payload_off: "Not running"

Check RasPlex

Check if RasPlex is online.

binary_sensor:
  - platform: command_line
    command: 'ping -c 1 rasplex.local | grep "1 received" | wc -l'
    name: 'is_rasplex_online'
    device_class: connectivity
    payload_on: 1
    payload_off: 0

An alternative solution could look like this:

binary_sensor:
  - platform: command_line
    name: Printer
    command: 'ping -W 1 -c 1 192.168.1.10 > /dev/null 2>&1 && echo success || echo fail'
    device_class: connectivity
    payload_on: "success"
    payload_off: "fail"

Consider to use the ping sensor as an alternative to the samples above.

Check if a system service is running

The services running is listed in /etc/systemd/system and can be checked with the systemctl command:

$ systemctl is-active home-assistant@rock64.service
active
$ sudo service home-assistant@rock64.service stop
$ systemctl is-active home-assistant@rock64.service
inactive

A binary command line sensor can check this:

binary_sensor:
  - platform: command_line
    command: '/bin/systemctl is-active home-assistant@rock64.service'
    payload_on: 'active'
    payload_off: 'inactive'