Builds a list of all systemctl-managed services so you can check if a given service exist before applying "service" ansible module

if_service_exist_capability.yml

---
- hosts: localhost
  become: yes

  tasks:
    - shell: systemctl list-unit-files --type=service | grep ".service" | tr -s " " | sed -e "s/ *$//g"
      register: clean_systemctl
      changed_when: false

    - set_fact:
        yaml_ready_systemctl: >
          {{ clean_systemctl.stdout_lines | map("regex_replace", "^(.*) (.*)$", "{'name': '\1','state': '\2'}") | list }}

    - set_fact:
        yaml_systemctl: >
          {{ yaml_ready_systemctl | map('regex_replace', "\.service", "") | map('from_yaml') | list }}

    - set_fact:
        all_services: >
          {{ yaml_systemctl | map(attribute='name') | list }}
        enabled_services: >
          {{ yaml_systemctl | selectattr("state", "equalto", "enabled") | map(attribute='name') | list }}
        disabled_services: >
          {{ yaml_systemctl | selectattr("state", "equalto", "disabled") | map(attribute='name') | list }}

    - debug: var=enabled_services