---
- name: Empty string compare success
  hosts: all
  tasks:
    - name: Shut down
      ansible.builtin.shell: |
        /sbin/shutdown -t now
        echo $var == ""
      changed_when: false
      when: ansible_os_family
    - name: Shut down
      ansible.builtin.shell: |
        /sbin/shutdown -t now
        echo $var == ""
      changed_when: false
      when: [ansible_os_family]