---
- name: Make sure reboot message is shown
  hosts: server
  gather_facts: false
  tasks:
    - name: Add line
      lineinfile:
        path: ~/.profile
        state: present
        search_string: "[[ -f /var/run/reboot-required ]] && echo '\\n*** You need to reboot *** \\n'"
        line: "[[ -f /var/run/reboot-required ]] && echo && echo '*** You need to reboot ***'"