---
- name: Configure default home directory and shell for system users
  block:
    - name: Set default home directory and shell for system users
      ansible.builtin.lineinfile:
        path: /etc/default/useradd
        regexp: "^{{ setting.key }}="
        line: "{{ setting.key }}={{ setting.value }}"
        create: yes
        backup: yes
      loop:
        - { key: "HOME", value: "/nonexistent" }
        - { key: "SHELL", value: "/sbin/nologin" }
      loop_control:
        loop_var: setting