How do I combine two commands in one task? | Ansible - nginx

Question

So, my problem is that I want to check if nginx is installed on two different OS with different package managers.
- name: Veryfying nginx installation # RedHat
command: "rpm -q nginx"
when: ansible_facts.pkg_mgr in ["yum","dnf","rpm"] #or (ansible_os_family == "RedHat")
- name: Veryfying nginx installation # Debian
command: "dpkg -l nginx"
when: ansible_facts.pkg_mgr in ["dpkg", "apt"] #or (ansible_os_family == "Debian")
Can I combine it in one task and how if it is possible? Because I need to register the output result and then use it onwards. Can't figure it out.

Answer 1

An alternative solution is to use the package_facts module, like this:
- hosts: localhost
tasks:
- package_facts:
- debug:
msg: "Nginx is installed!"
when: "'nginx' in packages"
But you could also register individual variables for your two tasks, and then combine the result:
- hosts: localhost
tasks:
- name: Veryfying nginx installation # RedHat
command: "rpm -q nginx"
when: ansible_facts.pkg_mgr in ["yum","dnf","rpm"] #or (ansible_os_family == "RedHat")
failed_when: false
register: rpm_check
- name: Veryfying nginx installation # Debian
command: "dpkg -l nginx"
when: ansible_facts.pkg_mgr in ["dpkg", "apt"] #or (ansible_os_family == "Debian")
failed_when: false
register: dpkg_check
- set_fact:
nginx_result: >-
{{
(rpm_check is not skipped and rpm_check.rc == 0) or
(dpkg_check is not skipped and dpkg_check.rc == 0)
}}
- debug:
msg: "nginx is installed"
when: nginx_result