- name: Shell scriptlet
  shell: |
    if echo "Fake check for need of change - always true"
    then
      echo 'CHANGED'
    fi
    if [ "False" == "{{ ansible_check_mode}}" ]
    then
      echo "Do the real thing here" || echo "FAILED" >&2
    fi
  check_mode: False
  register: my_result
  changed_when: "'CHANGED' in my_result.stdout_lines"
  failed_when: "'FAILED' in my_result.stderr_lines"