---
- name: "Check {{ item }}"
  register: log_file
  ansible.builtin.stat:
    path: "{{ item }}"

- name: Rotate log if present
  vars:
    timestamp: "{{ lookup('pipe', 'date +%s') }}"
  when:
    - log_file.stat.exists
  ansible.builtin.command:
    cmd: "mv {{ item }} {{ item }}-{{ timestamp }}"